publicationDate stringlengths 10 10 | title stringlengths 17 233 | abstract stringlengths 20 3.22k | id stringlengths 9 12 |
|---|---|---|---|
2020-09-30 | Domain Control by Adjusting Anisotropic Stress in Pyrochlore Oxide Cd2Re2O7 | The 5d pyrochlore oxide Cd2Re2O7 exhibits successive phase transitions from a
cubic pyrochlore structure (phase I) to a tetragonal structure without
inversion symmetry below Ts1 of ~200 K (phase II) and further to another
noncentrosymmetric tetragonal structure below Ts2 of ~120 K (phase III). The
two low-temperature p... | 2009.14443v1 |
2012-01-10 | Microscopic theory for a ferromagnetic-nanowire/superconductor heterostructure: Transport, fluctuations and topological superconductivity | Motivated by the recent experiment of Wang et al. [Nature Physics 6, 389
(2010)], who observed a highly unusual transport behavior of ferromagnetic
Cobalt nanowires proximity-coupled to superconducting electrodes, we study
proximity effect and temperature-dependent transport in such a mesoscopic
hybrid structure. It is... | 1201.2180v2 |
2016-03-14 | Lifshitz scaling effects on holographic paramagnetism/ferromagneism phase transition | In the probe limit, we investigate holographic paramagnetism-ferromagnetism
phase transition in the four-dimensional (4D) and five-dimensional(5D) Lifshitz
black holes by means of numerical and semi-analytical methods, which is
realized by introducing a massive 2-form field coupled to the Maxwell field. We
find that th... | 1603.04149v1 |
2016-03-14 | Double-phase transition and giant positive magnetoresistance in the quasi-skutterudite Gd$_3$Ir$_4$Sn$_{13}$ | The magnetic, thermodynamic and electrical/thermal transport properties of
the caged-structure quasi-skutterudite Gd$_3$Ir$_4$Sn$_{13}$ are
re-investigated. The magnetization $M(T)$, specific heat $C_p(T)$ and the
resistivity $\rho(T)$ reveal a double-phase transition -- at $T_{N1}\sim$ 10~K
and at $T_{N2}\sim$ 8.8~K -... | 1603.04377v1 |
2016-03-29 | Electronic and transport properties of the Mn-doped topological insulator Bi$_{2}$Te$_{3}$: A first-principles study | We present a first-principles study of the electronic, magnetic, and
transport properties of the topological insulator Bi$_{2}$Te$_{3}$ doped with
Mn atoms in substitutional (Mn$_{\rm Bi}$) and interstitial van der Waals gap
positions (Mn$_{\rm i}$), which act as acceptors and donors, respectively. The
effect of native... | 1603.08811v2 |
2017-04-03 | Thickness-dependent Kapitza resistance in multilayered graphene and other two-dimensional crystals | The Kapitza or thermal boundary resistance (TBR), which limits heat
dissipation from a thin film to its substrate, is a major factor in the thermal
management of ultrathin nanoelectronic devices and is widely assumed to be a
property of only the interface. However, data from experiments and molecular
dynamics simulatio... | 1704.00435v2 |
2017-04-23 | Quantum limit transport and destruction of the Weyl nodes in TaAs | Weyl fermions are a new ingredient for correlated states of electronic
matter. A key difficulty has been that real materials also contain non-Weyl
quasiparticles, and disentangling the experimental signatures has proven
challenging. We use magnetic fields up to 95 tesla to drive the Weyl semimetal
TaAs far into its qua... | 1704.06944v3 |
2017-05-01 | Arbitrary control of the polarization and intensity profiles of diffraction-attenuation-resistant beams along their propagation direction | We report on the theory and experimental generation of a class of
diffraction-attenuation-resistant beams with state of polarization (SoP) and
intensity that can be controlled on demand along the propagation direction.
This is achieved by a suitable superposition of Bessel beams, whose parameters
are systematically cho... | 1705.00408v3 |
2019-03-02 | Topological Valley Currents in Bilayer Graphene/Hexagonal Boron Nitride Superlattices | Graphene superlattices have recently been attracting growing interest as an
emergent class of quantum metamaterials. In this paper, we report the
observation of nonlocal transport in bilayer graphene (BLG) superlattices
encapsulated between two hexagonal boron nitride (hBN) layers, which formed
hBN/BLG/hBN moir\'e supe... | 1903.00625v2 |
2019-04-05 | Explicit relationship between electrical and topological degradation of polymer-supported metal films subjected to mechanical loading | For a comprehensive characterization of mechanical reliability of
metallization layers on polymer substrates both electrical and mechanical
degradation should be taken into account. Although it is evident that cracking
of a conductive film should lead to electrical degradation, the quantitative
relationship between the... | 1904.03007v1 |
2015-04-09 | Quantum oscillations with non-zero Berry phase from a complex three dimensional Fermi surface in Bi2Te3 | We performed angle dependent magnetoresistance study of a metallic single
crystal sample of Bi2Te3. We find that the magnetoresistance is highly
asymmetric in positive and negative magnetic fields for small angles between
the magnetic field and the direction perpendicular to the plane of the sample.
The magnetoresistan... | 1504.02386v1 |
2015-06-17 | Origin of the glass-like dynamics in molecular metals $\pmbκ$-(BEDT-TTF)$_{\textbf{2}}$X: implications from fluctuation spectroscopy and $\pmb{\textit{ab initio}}$ calculations | We have studied the low-frequency dynamics of the charge carriers in
different organic charge-transfer salts $\kappa$-(BEDT-TTF)$_2$X with polymeric
anions X by using resistance noise spectroscopy. Our aim is to investigate the
structural, glass-like transition caused by the conformational degrees of
freedom of the BED... | 1506.05191v1 |
2015-07-13 | Structural, and Magnetic properties of flux free large FeTe Single crystal | We report synthesis of non superconducting parent compound of iron
chalcogenide, i.e., FeTe single crystal by self flux method. The FeTe single
crystal is crystallized in tetragonal structure with the P4/nmm space group.
The detailed SEM (scanning electron microscopy) results showed that the
crystals are formed in slab... | 1507.03320v2 |
2018-12-06 | Covalent-bonding-induced strong phonon scattering in the atomically thin WSe2 layer | In nano-device applications using 2D van der Waals materials, a heat
dissipation through nano-scale interfaces can be a critical issue for
optimizing device performances. By using a time-domain thermoreflectance
measurement technique, we examine a cross-plane thermal transport through
mono-layered (n=1) and bi-layered ... | 1812.02383v1 |
2018-12-25 | Quantum Transport in Topological Semimetals under Magnetic Fields (II) | We review our recent works on the quantum transport, mainly in topological
semimetals and also in topological insulators, organized according to the
strength of the magnetic field. At weak magnetic fields, we explain the
negative magnetoresistance in topological semimetals and topological insulators
by using the semicl... | 1812.10120v2 |
2019-06-11 | Observation of Large Unidirectional Rashba Magnetoresistance in Ge(111) | Relating magnetotransport properties to specific spin textures at surfaces or
interfaces is an intense field of research nowadays. Here, we investigate the
variation of the electrical resistance of Ge(111) grown epitaxially on
semi-insulating Si(111) under the application of an external magnetic field. We
find a magnet... | 1906.04457v1 |
2019-06-11 | Thermal conductivity and thermal rectification of nanoporous graphene: A molecular dynamics simulation | Using non-equilibrium molecular dynamics (NEMD) simulation, we study thermal
properties of the so-called nanoporous graphene (NPG) sheet which contains a
series of nanoporous in an ordered way and was synthesized recently (Science
360 (2018), 199). The dependence of thermal conductivity on sample size, edge
chirality, ... | 1906.04696v1 |
2019-06-12 | Spin transport and Spin Tunnelling Magneto-Resistance (STMR) of F$|$NCSC$|$F spin valve | In this work, we study the spin transport at the
Ferromagnet$|$Noncentrosymmetric Superconductor (F$|$NCSC) junction of a
Ferromagnet$|$Noncentrosymmetric Superconductor$|$Ferromagnet (F$|$NCSC$|$F)
spin valve. We investigate the Tunnelling Spin-Conductance (TSC), spin current
and Spin Tunnelling Magneto-Resistance (ST... | 1906.05081v1 |
2019-06-13 | Passivation-induced physicochemical alterations of the native surface oxide film on 316L austenitic stainless steel | Time of Flight Secondary Ion Mass Spectroscopy, X-Ray Photoelectron
Spectroscopy, in situ Photo-Current Spectroscopy and electrochemical analysis
were combined to characterize the physicochemical alterations induced by
electrochemical passivation of the surface oxide film providing corrosion
resistance to 316L stainles... | 1906.05544v1 |
2019-06-21 | Crystal Growth and basic transport and magnetic properties of MnBi2Te4 | We report successful growth of magnetic topological insulator (MTI) MnBi2Te4.
The heating schedule basically deals with growth of the crystal from melt at
900C and very slow cooling (1C/hr) to around 600C with 24 hours hold time,
followed by cooling to room temperature. Our detailed, PXRD Reitveld analysis
showed that ... | 1906.09038v3 |
2019-10-03 | Nonlinear transport of ballistic Dirac electrons tunneling through a tunable potential barrier in graphene | Dirac-electronic tunneling and nonlinear transport properties with both
finite and zero energy bandgap are investigated for graphene with a tilted
potential barrier under a bias. For validation, results from a
finite-difference based numerical approach, which is developed for calculating
transmission and reflection coe... | 1910.01295v1 |
2019-10-09 | Decoupling of itinerant and localized $d$-orbital electrons in the compound Sc$_{0.5}$Zr$_{0.5}$Co | By using the arc-melting method, we successfully synthesized the compound
Sc$_{0.5}$Zr$_{0.5}$Co with the space group of $Pm$-$3m$. Both the resistivity
and magnetic susceptibility measurements reveal a phase transition at about 86
K. This transition might be attributed to the establishment of an
antiferromagnetic orde... | 1910.03966v1 |
2019-10-10 | AFM manipulation of gold nanowires to build electrical circuits | We introduce scanning-probe-assisted nanowire circuitry (SPANC) as a new
method to fabricate electrodes for the characterization of electrical transport
properties at the nanoscale. SPANC uses an atomic force microscope (AFM) to
manipulate nanowires to create complex and highly conductive nanostructures
(paths) that wo... | 1910.04801v1 |
2019-10-21 | A report of (topological) Hall anomaly two decades ago in Gd2PdSi3, and its relevance to the history of the field of Topological Hall Effect due to magnetic skyrmions | The area of magnetic skyrmions, with potential revolution in certain
applications, in condensed matter physics is considered about a decade old. In
this article, we draw the attention of the community to the recent work of
Kurumaji et al [Science 365, 914 (2019)] establishing magnetic skyrmion lattice
behavior in Gd2Pd... | 1910.09194v2 |
2019-10-25 | Energy-efficient ultrafast SOT-MRAMs based on low-resistivity spin Hall metal Au0.25Pt0.75 | Many key electronic technologies (e.g., large-scale computing, machine
learning, and superconducting electronics) require new memories that are fast,
reliable, energy-efficient, and of low-impedance at the same time, which has
remained a challenge. Non-volatile magnetoresistive random access memories
(MRAMs) driven by ... | 1910.11896v2 |
2019-11-15 | Resist and Transfer Free Patterned CVD Graphene Growth on ALD Molybdenum Carbide Nano Layers | Multilayer graphene (MLG) films were grown by chemical vapour deposition
(CVD) on molybdenum carbide ($MoC_{x}$) substrates. We fabricated the catalytic
$MoC_{x}$ films by plasma enhanced atomic layer deposition (PEALD). The
mechanism of graphene growth is studied and analysed for amorphous and
crystalline $MoC_{x}$ fi... | 1911.06490v3 |
2020-05-30 | Tribocorrosion under galvanic interaction of Ti6Al4V and NiCr implant alloys | Micromovements that occur in the joint between dental prostheses and implants
can lead to wear-induced degradation. This process can be enhanced by corrosion
in the oral environment influenced by the presence of solutions containing
fluoride. Moreover, the eventual galvanic interactions between NiCr and Ti
alloys can a... | 2006.00270v1 |
2020-10-16 | Multiscale studies of nanoconfined charging dynamics in supercapacitors bridged by machine learning | The energy-delivery performance of supercapacitors is fundamentally
determined by the dynamics of ions confined in nanoporous materials, which has
attracted intensive interest in nanoscopic research. Many nanoscopic
understandings, including changes in in-pore ion concentration and mobility
during dynamical processes, ... | 2010.08151v1 |
2020-10-31 | A Non-Volatile Cryogenic Random-Access Memory Based on the Quantum Anomalous Hall Effect | The interplay between ferromagnetism and topological properties of electronic
band structures leads to a precise quantization of Hall resistance without any
external magnetic field. This so-called quantum anomalous Hall effect (QAHE) is
born out of topological correlations, and is oblivious of low-sample quality.
It wa... | 2011.00170v1 |
2021-02-11 | Microscopic metallic air-bridge arrays for connecting quantum devices | We present a single-exposure fabrication technique for a very large array of
microscopic air-bridges using a tri-layer resist process with electron-beam
lithography. The technique is capable of forming air-bridges with strong
metal-metal or metal-substrate connections. This was demonstrated by its
application in an ele... | 2102.06123v2 |
2021-03-29 | In Situ Phase-Transition Crystallization of All-Inorganic Water-Resistant Exciton-Radiative Heteroepitaxial CsPbBr3-CsPb2Br5 Core-Shell Perovskite Nanocrystals | The instability of metal halide perovskites upon exposure to moisture or heat
strongly hampers their applications in optoelectronic devices. Here, we report
the large-yield synthesis of highly water-resistant total-inorganic green
luminescent CsPbBr3/CsPb2Br5 core/shell heteronanocrystals (HNCs) by developing
an in sit... | 2103.15491v2 |
2021-05-31 | Ab initio Molecular Dynamics Simulation of Threshold Displacement Energies and Defect Formation Energies in Y4Zr3O12 | Ab initio molecular dynamics simulations using VASP was employed to calculate
threshold displacement energies and defect formation energies of Y4Zr3O12
{\delta}-phase, which is the most commonly found phase in newly developed Zr
and Al-containing ODS steels. The Threshold displacement energy (Ed) values are
determined ... | 2105.15066v1 |
2021-06-10 | Multilayer Capacitances: How Selective Contacts Affect Capacitance Measurements of Perovskite Solar Cells | Capacitance measurements as a function of voltage, frequency and temperature
are useful tools to identify fundamental parameters that affect solar cell
operation. Techniques such as capacitance-voltage (CV), Mott-Schottky analysis
and thermal admittance spectroscopy (TAS) measurements are therefore frequently
employed ... | 2106.05758v2 |
2021-06-25 | Blistering Failure of Elastic Coatings with Applications to Corrosion Resistance | A variety of polymeric surfaces, such as anti-corrosion coatings and
polymer-modified asphalts, are prone to blistering when exposed to moisture and
air. As water and oxygen diffuse through the material, dissolved species are
produced, which generate osmotic pressure that deforms and debonds the
coating.These mechanism... | 2106.13371v1 |
2021-07-29 | Thermal Contribution in the Electrical Switching Experiments with Heavy Metal / Antiferromagnet Structures | We examine the thermal origin of the detected "saw-tooth" shaped Hall
resistance (Rxy) signals in the spin-orbit torque switching experiment for
antiferromagnetic MnN. Compared with the results of the heavy metal /
antiferromagnet bilayers (MnN/Ta), the qualitatively same "saw-tooth" shaped
signals also appear in the s... | 2107.13859v1 |
2021-08-26 | Direct thermal infrared vision via nanophotonic detector design | Detection of infrared (IR) photons in a room-temperature IR camera is carried
out by a two-dimensional array of microbolometer pixels which exhibit
temperature-sensitive resistivity. When IR light coming from the far-field is
focused onto this array, microbolometer pixels are heated up in proportion to
the temperatures... | 2108.11583v1 |
2021-08-26 | Effects of minor alloying on the mechanical properties of Al based metallic glasses | Minor alloying is widely used to control mechanical properties of metallic
glasses (MGs). The present understanding of how a small amount of alloying
element changes strength is that the additions lead to more efficient packing
of atoms and increased local topological order, which then increases the
barrier for shear t... | 2108.12028v1 |
2021-09-13 | Ray Optics for Gliders | Control of self-propelled particles is central to the development of many
microrobotic technologies, from dynamically reconfigurable materials to
advanced lab-on-a-chip systems. However, there are few physical principles by
which particle trajectories can be specified and can be used to generate a wide
range of behavio... | 2109.06360v5 |
2021-10-11 | Topological phonons in an inhomogeneously strained silicon-2: Evidence of spin-momentum locking | In this study, we report first experimental evidence of spin-momentum locking
in the topological phonons in an inhomogeneously strained Si thin film. The
spin-momentum locking in the topological phonons lead to a longitudinal spin
texture or spatially inhomogeneous spin distribution in the freestanding sample
structure... | 2110.04937v1 |
2021-10-11 | Bi kagome sublattice distortions by quenching and flux pinning in superconducting RbBi$_2$ | The properties of RbBi$_2$, a 4.15 K superconductor, were investigated using
magnetic field, pressure and neutron diffraction. Under hydrostatic pressure,
an almost 50 % reduction of T$_c$ is observed, linked to a low Debye
temperature estimated at 165 K. The resistivity and magnetic susceptibility
were measured on que... | 2110.05452v1 |
2021-10-18 | Magnetic field induced transition from a vortex liquid to Bose metal in ultrathin a-MoGe thin film | We identify a magnetic field induced transition from a vortex liquid to Bose
metal in a 2-dimensional amorphous superconductor, a-MoGe, using a combination
of magnetotransport and scanning tunnelling spectroscopy (STS). Below the
superconducting transition, Tc ~ 1.36 K, the magnetoresistance isotherms cross
at a nearly... | 2110.09335v3 |
2021-12-18 | Infrared Absorption and its Sources of CdZnTe at Cryogenic Temperature | To reveal the infrared absorption causes in the wavelength region between
electronic and lattice absorptions, we measured the temperature dependence of
the absorption coefficient of $p$-type low-resistivity ($\sim 10^2~{\rm \Omega
cm}$) CdZnTe crystals. We measured the absorption coefficients of CdZnTe
crystals in four... | 2112.09879v1 |
2022-01-02 | Role of surface functional groups to superconductivity in Nb$_2$C-MXene: Experiments and density functional theory calculations | The recently discovered surface-group-dependent superconductivity in
Nb$_2$C-MXene fabricated by the molten salts method is attracting wide
attention. However, regarding the superconductivity of Nb$_2$C-MXene with
functional F groups (Nb$_2$CF$_x$), there were some conflicting results in
experimental and theoretical st... | 2201.00298v1 |
2022-01-13 | Charge-Density-Wave Proximity Effects in Graphene | Certain layered transition metal dichalcogenides (TMDCs), such as 1T-TaS2,
show a rich collection of charge density wave (CDW) phases at different
temperatures, and their atomic structures and electron conductions have been
widely studied. However, the properties of CDW systems that are integrated with
other electronic... | 2201.04844v2 |
2022-01-25 | Charge-4e and charge-6e flux quantization and higher charge superconductivity in kagome superconductor ring devices | The flux quantization is a key indication of electron pairing in
superconductors. For example, the well-known h/2e flux quantization is
considered strong evidence for the existence of the charge-2e, two-electron
Cooper pairs. Here we report evidence for multi-charge flux quantization in
mesoscopic ring devices fabricat... | 2201.10352v3 |
2022-03-09 | The drastic effect of the impurity scattering on the electronic and superconducting properties of Cu-doped FeSe | Non-magnetic impurities in iron-based superconductors can provide an
important tool to understand the pair symmetry and they can influence
significantly the transport and the superconducting behaviour. Here, we present
a study of the role of strong impurity potential in the Fe plane, induced by Cu
substitution, on the ... | 2203.04624v1 |
2022-04-21 | Ferrous Metal Matrix Composites Status Scope and Challenges | The present paper is an effort to culminate the status, scopes and challenges
in the development of ferrous metal matrix composites (FMMCs). The FMMCs are
old but less in use than the non-ferrous metal matrix composites (NFMMCs), as
far as literature and actual applications are concerned. Therefore, this
stimulates the... | 2204.09999v2 |
2022-05-12 | Investigation of lattice dynamics, magnetism and electronic transport in $β$-Na$_{0.33}$V$_2$O$_{5}$ | We investigate the electronic and magnetic properties as well as lattice
dynamics and spin-phonon coupling of $\beta$-Na$_{0.33}$V$_2$O$_5$ using
temperature-dependent Raman scattering, dc-magnetization and dc-resistivity,
x-ray photoemission, and absorption spectroscopy. The Rietveld refinement of
XRD pattern with spa... | 2205.06019v2 |
2022-05-04 | Graphene/fluorinated graphene systems for a wide spectrum of electronics application | Heterostructures prepared from graphene and fluorographene (FG) using the
technology of 2D printing on solid and flexible substrates were fabricated and
studied. Excellent stability of printed graphene layers and, to a lesser
degree, composite graphene: PEDOT: PSS layers were shown. Extraordinary
properties of FG as an... | 2205.07602v1 |
2022-07-14 | Magnetron Sputtered Non-Toxic and Precious Element-Free Ti-Zr-Ge Metallic Glass Nanofilms with Enhanced Biocorrosion Resistance | The chemical composition and structural state of advanced alloys are the
decisive factors in optimum biomedical performance. This contribution presents
unique Ti-Zr-Ge metallic glass thin-film compositions fabricated by magnetron
sputter deposition targeted for nanocoatings for biofouling prevention. The
amorphous nano... | 2207.07000v2 |
2022-08-09 | Structural, magnetic and transport properties of Co$_2$CrAl epitaxial thin films | We report the physical properties of Co$_2$CrAl Heusler alloy epitaxial thin
films grown on single crystalline MgO(001) substrate using pulsed laser
deposition technique. The x-ray diffraction pattern in $\theta$-2$\theta$ mode
showed the film growth in single phase B2-type ordered cubic structure with the
presence of ... | 2208.04687v1 |
2022-10-21 | Effect of Pressure on Electrical and optical Properties of Metal Doped TiO$_2$ | A comparative study of the electrical and optical properties has been done on
3d-doped TiO$_2$. Ti$_{1-x}$M$_x$O$_2$ (M= Sc, V, Cr, Mn, Fe, Co, Ni, Cu, Zn)
powder and its corresponding pellets, with doping concentration $x= 0.05$. The
samples were prepared using the solid-state route. Optical and electrical
measurement... | 2210.11687v1 |
2022-10-28 | Optimal Inverter-Based Resources Placement in Low-Inertia Power Systems | An increase in the integration of Inverter Based Resources (IBRs) to the
electric grid, will lead to a corresponding decrease in the amount of connected
synchronous generators, resulting in a decline in the available rotational
inertia system-wide. This can lead to pronounced frequency deviations when
there are disturb... | 2210.15839v1 |
2022-12-16 | Environmental Doping-Induced Degradation of the Quantum Anomalous Hall Insulators | The quantum anomalous Hall (QAH) insulator is a topological quantum state
with quantized Hall resistance and zero longitudinal resistance in the absence
of an external magnetic field. The QAH insulator carries spin-polarized
dissipation-free chiral edge current and thus provides a unique opportunity to
develop energy-e... | 2212.08538v1 |
2023-01-13 | Exploring the substrate-driven morphological changes in Nd0.6Sr0.4MnO3 thin films | Manganite thin films are promising candidates for studying the strongly
correlated electron systems. Understanding the growth-and morphology-driven
changes in the physical properties of manganite thin films is vital for their
applications in oxitronics. This work reports the morphological, structural,
and electrical tr... | 2301.05513v1 |
2023-01-30 | Percolation and electrical conduction in random systems of curved linear objects on a plane: computer simulations along with a mean-field approach | Using computer simulations, we have studied the percolation and the
electrical conductance of two-dimensional, random percolating networks of
curved, zero-width metallic nanowires. We mimicked the curved nanowires using
circular arcs. The percolation threshold decreased as the aspect ratio of the
arcs increased. Compar... | 2301.12795v1 |
2023-01-31 | Platinum contacts for 9-atom-wide armchair graphene nanoribbons | Creating a good contact between electrodes and graphene nanoribbons (GNRs)
has been a longstanding challenge in searching for the next GNR-based
nanoelectronics. This quest requires the controlled fabrication of sub-20 nm
metallic gaps, a clean GNR transfer minimizing damage and organic contamination
during the device ... | 2301.13814v1 |
2023-02-13 | Growth of Zr/ZrO2 core-shell structures by Fast Thermal Oxidation | This research has been conducted to characterize and validate the resistive
heating as a synthesis method for zirconium oxides (ZrO$_2$). A wire of Zr has
been oxidized to form a core shell structure, in which the core is the metal
wire, and the shell is an oxide layer around 10${\mu}$m thick. The
characterization This... | 2302.06296v1 |
2023-03-15 | Magnetic phase diagram and multiple field-induced states in the intermetallic triangular-lattice antiferromagnet NdAuAl$_4$Ge$_2$ with Ising-like spins | Geometrical frustration and the enhancement of strong quantum fluctuations in
two-dimensional triangular antiferromagnets can lead to various intriguing
phenomena. Here, we studied the spin-1/2 triangular lattice antiferromagnet
NdAuAl$_4$Ge$_2$. Thermodynamic and transport properties, such as magnetization
and specifi... | 2303.08661v1 |
2023-04-07 | Effect of Pt vacancies on magnetotransport of Weyl semimetal candidate GdPtSb epitaxial films | We examine the effects of Pt vacancies on the magnetotransport properties of
Weyl semimetal candidate GdPtSb films, grown by molecular beam epitaxy on
c-plane sapphire. Rutherford backscattering spectrometry (RBS) and x-ray
diffraction measurements suggest that phase pure GdPt$_{x}$Sb films can
accommodate up to $15\%$... | 2304.03811v1 |
2023-05-22 | Development of Fe$_2$O$_3$/YSZ ceramic plates for cryogenic operation of resistive-protected gaseous detectors | We present a ceramic material based on hematite (Fe$_2$O$_3$) and zirconia
stabilized with yttria at 8% molar (YSZ), that exhibits stable electrical
properties with transported charge and that can be tuned to the resistivities
necessary to induce spark-quenching in gaseous detectors ($\rho = 10^9-10^{12}$
$\Omega \cdot... | 2305.12899v2 |
2023-07-05 | An efficient approach to include transport effects in thin coating layers in electrochemo-mechanical models for all-solid-state batteries | A novel approach is presented to efficiently include transport effects in
thin active material coating layers of all-solid-state batteries using a
dimensionally reduced formulation embedded into a three-dimensionally resolved
coupled electrochemo-mechanical continuum model. In the literature, the effect
of coating laye... | 2307.02424v1 |
2023-08-04 | Effect of Pb addition on microstructure, transport properties and the critical current density in a polycrystalline FeSe0.5Te0.5 | We have investigated the effects of lead (Pb) additions (x) up to 40 wt.% (x
= 0-0.4) on the structure, electrical properties, and magnetic properties of
FeSe0.5Te0.5 superconductor. The samples were prepared by the solid-state
reaction method and characterized by various techniques. The parent compound (x
= 0) showed ... | 2308.02128v1 |
2023-08-07 | Single crystal growth and characterization of antiferromagnetically ordering EuIn$_2$ | We report the single crystal growth and characterization of EuIn$_2$, a
magnetic topological semimetal candidate according to our density functional
theory (DFT) calculations. We present results from electrical resistance,
magnetization, M\"ossbauer spectroscopy, and X-ray resonant magnetic scattering
(XRMS) measuremen... | 2308.03600v1 |
2023-08-10 | Ferromagnetism and insulating behavior with a logarithmic temperature dependence of resistivity in $Pb_{10-x}Cu_x\left( PO_4 \right) _6O$ | Recent claim of discovering above-room-temperature superconductivity (Tc
about 400 K) at ambient pressure in copper doped apatite $Pb_{10}\left( PO_4
\right) _6O$ has stimulated world-wide enthusiasm and impulse of motion. A lot
of follow-up works have been carried out with controversial conclusions. To
check whether s... | 2308.05786v3 |
2023-08-15 | Thermoelectric response across the semiconductor-semimetal transition in black phosphorus | In spite of intensive studies on thermoelectricity in metals, little is known
about thermoelectric response in semiconductors at low temperature. An even
more fascinating and unanswered question is what happens to the Seebeck
coefficient when the semiconductor turns to a metal. By precisely tuning the
ground state of b... | 2308.07900v1 |
2023-08-18 | Anomalous Hall effect induced by Berry curvature in topological nodal-line van der Waals ferromagnet Fe$_4$GeTe$_2$ | The exploration of nontrivial transport phenomena associated with the
interplay between magnetic order and spin-orbit coupling (SOC), particularly in
van der Waals (vdW) systems has gained a resurgence of interest due to their
easy exfoliation, ideal for two-dimensional (2D) spintronics. We report the
near room tempera... | 2308.09695v1 |
2023-08-25 | Evidence of the Coulomb gap in the density of states of MoS$_2$ | $\mathrm{MoS_2}$ is an emergent van der Waals material that shows promising
prospects in semiconductor industry and optoelectronic applications. However,
its electronic properties are not yet fully understood. In particular, the
nature of the insulating state at low carrier density deserves further
investigation, as it... | 2308.13337v2 |
2023-09-05 | Localized f-electron magnetism in the semimetal Ce3Bi4Au3 | Ce$_{3}$Bi$_{4}$Au$_{3}$ crystallizes in the same non-centrosymmetric cubic
structure as the prototypical Kondo insulator Ce$_{3}$Bi$_{4}$Pt$_{3}$. Here we
report the physical properties of Ce$_{3}$Bi$_{4}$Au$_{3}$ single crystals
using magnetization, thermodynamic, and electrical-transport measurements.
Magnetic-susce... | 2309.02559v1 |
2023-09-27 | Design of Passive and Structural Conductors for Tokamaks Using Thin-Wall Eddy Current Modeling | A new three-dimensional electromagnetic modeling tool ThinCurr has been
developed using the existing PSI-Tet finite-element code in support of
conducting structure design work for both the SPARC and DIII-D tokamaks. Within
this framework a 3D conducting structure model was created for both the SPARC
and DIII-D tokamaks... | 2309.15336v1 |
2023-10-02 | Dielectric Detection of Single Nanoparticles Using a Microwave Resonator Integrated with a Nanopore | The characterization of individual nanoparticles in a liquid constitutes a
critical challenge for environmental, material, and biological sciences. To
detect nanoparticles, electronic approaches are especially desirable owing to
their compactness and lower costs. Indeed, for single-molecule and
single-nanoparticle dete... | 2310.00910v1 |
2023-10-16 | Growth and characterization of the magnetic topological insulator candidate Mn$_2$Sb$_2$Te$_5$ | We report a new member of topological insulator (TI) family i.e.,
Mn$_2$Sb$_2$Te$_5$, which belongs to MnSb$_2$Te$_4$ family and is a sister
compound of Mn$_2$Bi$_2$Te$_5$. An antiferromagnetic layer of (MnTe)$_2$ has
been inserted between quintuple layers of Sb$_2$Te$_3$. The crystal structure
and chemical composition... | 2310.10163v1 |
2023-10-22 | Investigation of the mechanism of the anomalous Hall effects in Cr2Te3/(BiSb)2(TeSe)3 heterostructure | The interplay between ferromagnetism and the non-trivial topology has
unveiled intriguing phases in the transport of charges and spins. For example,
it is consistently observed the so-called topological Hall effect (THE)
featuring a hump structure in the curve of the Hall resistance (Rxy) vs. a
magnetic field (H) of a ... | 2310.14259v1 |
2023-11-09 | Lithium-ion battery degradation: using degradation mode analysis to validate lifetime prediction modelling | Predicting lithium-ion battery lifetime is one of the greatest unsolved
problems in battery research right now. Recent years have witnessed a surge in
lifetime prediction papers using physics-based, empirical, or data-driven
models, most of which have been validated against the remaining capacity
(capacity fade) and so... | 2311.05482v2 |
2023-11-19 | Non-Hermitian effect to the ballistic transport and quantized Hall conductivity in 2H-MoS$_{2}$ | By designing a multi-channel millimeter Hall measurement configuration, we
realize the carrier-density (locally) controllable measurement on the transport
property in 2H MoS$_{2}$. We observe a linearly increased Hall conductivity and
exponentially decreased resistivity as the increase of dc current. The
intrinsically ... | 2311.11276v3 |
2023-11-24 | Even-in-magnetic-field part of transverse resistivity as a probe of magnetic order | The detection of a voltage transverse to both an applied current and a
magnetic field is one of the most common characterization techniques in
solid-state physics. The corresponding component of the resistivity tensor
$\rho_{ij}$ can be separated into odd and even parts with respect to the
applied magnetic field. The f... | 2311.14498v1 |
2023-12-10 | Radiation resistance of fine-grained ceramics Y2.5Nd0.5Al5O12 under Xe-ions irradiation | Oxide Y2.5Nd0.5Al5O12 (YAG:Nd) with garnet structure was synthesized in the
powder and ceramics forms. Fine-grained YAG:Nd ceramics with a relative density
of ~99% were obtained by the Spark Plasma Sintering method (SPS). The radiation
resistance of ceramics was studied under irradiation with swift Xe-ions (E =
146 MeV... | 2312.05820v1 |
2024-01-16 | Thermoelectric power of overdoped Tl2201 crystals: Charge density waves and $T^1$ and $T^2$ resistivities | We report measurements of the in-plane thermoelectric power (TEP) for an
overdoped (OD) crystal of the single layer cuprate superconductor
Tl$_2$Ba$_2$CuO$_{6+x}$ (Tl2201) at several hole concentrations ($p$), from 300
or 400 K to below the superconducting transition temperature ($T_c$). For $p$ =
0.192 and 0.220, smal... | 2401.08380v1 |
2024-01-25 | Unveiling a Novel Metal-to-Metal Transition in LuH2: Critically Challenging Superconductivity Claims in Lutetium Hydrides | Following the recent report by Dasenbrock-Gammon et al. (2023) of
near-ambient superconductivity in nitrogen-doped lutetium trihydride
(LuH3-{\delta}N{\epsilon}), significant debate has emerged surrounding the
composition and interpretation of the observed sharp resistance drop. Here, we
meticulously revisit these clai... | 2401.13958v2 |
2024-02-06 | Homogeneity problem for basis expansion of functional data with applications to resistive memories | The homogeneity problem for testing if more than two different samples come
from the same population is considered for the case of functional data. The
methodological results are motivated by the study of homogeneity of electronic
devices fabricated by different materials and active layer thicknesses. In the
case of no... | 2402.04321v1 |
2024-02-17 | Fourier Electron Optics with Massless Dirac Fermions Scattered by Quantum Dot Lattice | The field of electron optics exploits the analogy between the movement of
electrons or charged quasiparticles, primarily in two-dimensional materials
subjected to electric and magnetic (EM) fields and the propagation of
electromagnetic waves in a dielectric medium with varied refractive index. We
significantly extend t... | 2402.11259v1 |
2024-04-01 | Electronic structure and thermoelectric properties of epitaxial Sc1-xVxNy thin films grown on MgO(001) | The electronic structure of Sc1-xVxNy epitaxial films with different alloying
concentrations of V are investigated with respect to effects on thermoelectric
properties. Band structure calculations on Sc0.75V0.25N indicate that V 3d
states lie in the band gap of the parent ScN compound in the vicinity of the
Fermi level... | 2404.01417v1 |
2024-05-01 | Metamagnetism and anomalous magnetotransport properties in rare-earth-based polar semimetals $R$AuGe ($R =$ Dy, Ho, and Gd) | We report the magnetic, magnetoelastic, and magnetotransport properties of
single crystals of polar magnets $R$AuGe ($R=$ Dy, Ho, and Gd), grown by Au-Ge
self-flux. Magnetization and magnetostriction measurements reveal multi-step
metamagnetic transitions for the $c$-axis magnetic field ($H\parallel c$) for
DyAuGe and ... | 2405.00628v2 |
1995-10-03 | Theory of the Normal State of Cuprate Superconducting Materials | We have proposed a model Hamiltonian, which describes a simple physical
picture that the holes with single occupation constraint introduced by doping
move in the antiferromagnetic background of the copper spins, to describe the
normal state of the cuprate superconducting materials, and used the
renormalization group me... | 9510015v1 |
1999-03-04 | Transport in Materials with Disclination Dipoles: Applications to Polycrystals and Amorphous Dielectrics | The problem of both electron and phonon scattering by wedge disclination
dipoles (WDD) is studied in the framework of the deformation potential
approach. The exact analytical results for the mean free path are obtained
within the Born approximation. The WDD-induced contribution to the residual
resistivity in nanocrysta... | 9903072v1 |
1999-05-06 | Role of Orbitals in Manganese Oxides - Ordering and Fluctuation | We study the manganese oxides from the viewpoint of the strongly correlated
doped Mott insulator. The magnetic ordering and the charge transport are
governed by the orbital degrees of freedom, and their dimensionality is
controlled by the anisotropic transfer integrals between the $e_g$ orbitals. As
x increases the mag... | 9905072v1 |
1999-11-16 | Magneto-impedance of glass-coated Fe-Ni-Cu microwires | The magneto-impedance (MI) of glass-coated Fe-Ni-Cu microwires was
investigated for longitudinal radio-frequency (RF) currents up to a frequency
of 200 MHz using an RF lock-in amplifier method. The MI, defined as DZ/Z =
[Z(H)-Z(H=0.3T)]/Z(H=0.3T), displays a peak structure (negative MI) at zero
field for RF currents wi... | 9911241v1 |
2000-11-18 | Magneto-electronic Properties of a Ferrimagnetic Semiconductor: The Hybrid Cupromanganite CaCu3Mn4O12 | The mixed manganite-cuprate CaCu3Mn4O12 is found, using density functional
methods, to be a narrow gap (90 meV calculated) ferrimagnetic semiconductor. Cu
(formally S=1/2) antialigns with Mn (formally S=3/2), and the net spin moment
is 9 \mu_B consistent with the formal spins. Holes have Cu d_{xy}-O p_{\sigma}
(i.e. an... | 0011316v1 |
2001-06-15 | Pressure-induced recovery of the Fermi-liquid state in the non-Fermi liquid material U2Pt2In | In the study of non-Fermi-liquid (NFL) phenomena in correlated metals,
U2Pt2In is of special interest as it is one of the rare stoichiometric
(undoped) materials that show NFL behaviour at ambient pressure. Here we report
on the stability of the NFL phase with respect to hydrostatic pressure (p< 1.8
GPa). Electrical re... | 0106292v1 |
2002-04-25 | Interpretation of large room-temperature diamagnetism at low magnetic fields in films of oxidised atactic polypropylene in terms of superconducting current loops | A simple model is used to analyse published results on large room-temperature
diamagnetism for two films of oxidised atactic polypropylene (OAPP) at low
magnetic fields. The model involves induced currents expected in circular
closed loops of superconductors in fields below the lower critical field H_{c1}
at which flux... | 0204556v1 |
2002-08-28 | Low frequency 1/f noise in doped manganite grain-boundary junctions | We have performed a systematic analysis of the low frequency 1/f-noise in
single grain boundary junctions in the colossal magnetoresistance material
La_{2/3}Ca_{1/3}MnO_{3-delta}. The grain boundary junctions were formed in
epitaxial La_{2/3}Ca_{1/3}MnO_{3-delta} films deposited on SrTiO_3 bicrystal
substrates and show... | 0208556v1 |
2002-11-14 | Variable-Range Hopping of Spin Polarons: Magnetoresistance in a Modified Mott Regime | We analize electrical conductivity controlled by hopping of bound spin
polarons in disordered solids with wide distributions of electron energies and
polaron shifts (barriers). By means of percolation theory and Monte Carlo
simulations we have shown that in such materials at low temperatures, when
hopping occurs in the... | 0211301v1 |
2002-11-15 | Ultra-sharp magnetization steps in perovskite manganites | We report a detailed study of step-like metamagnetic transitions in the
magnetization and resistivity of polycrystalline Pr0.5Ca0.5Mn0.95Co0.05O3. The
steps have a sudden onset below a critical temperature, are extremely sharp
(width < 0.2 mT), and occur at critical fields which are linearly dependent on
the absolute v... | 0211337v1 |
2003-04-02 | Low Friction Flows of Liquids at Nanopatterned Interfaces | With the recent important development of microfluidic systems,
miniaturization of flow devices has become a real challenge. Microchannels,
however, are characterized by a large surface to volume ratio, so that surface
properties strongly affect flow resistance in submicrometric devices. We
present here results showing ... | 0304037v1 |
2003-05-30 | A Low-Temperature Atomic Layer Deposition Liftoff Method for Microelectronic and Nanoelectronic Applications | We report a novel method for depositing patterned dielectric layers with
sub-micron features using atomic layer deposition (ALD). The patterned films
are superior to sputtered or evaporated films in continuity, smoothness,
conformality, and minimum feature size. Films were deposited at 100-150C using
several different ... | 0305711v2 |
2003-11-13 | Structural, magnetic and transport properties of thin films of the Heusler alloy Co2MnSi | Thin films of Co2MnSi have been grown on a-plane sapphire substrates from
three elemental targets by dc magnetron co-sputtering. These films are single
phase, have a strong (110) texture and a saturation magnetization of 4.95
uB/formula unit at 10 K. Films grown at the highest substrate temperature of
715 K showed the ... | 0311316v1 |
2004-05-17 | Itinerant Ferromagnetism and Superconductivity | Superconductivity has again become a challenge following the discovery of
unconventional superconductivity. Resistance-free currents have been observed
in heavy-fermion materials, organic conductors and copper oxides. The discovery
of superconductivity in a single crystal of $UGe_2$, $ZrZn_2$ and $URhGe$
revived the in... | 0405371v2 |
2005-01-08 | Silver paint as a soldering agent for DyBaCuO single-domains welding | Silver paint has been tested as a soldering agent for DyBaCuO single-domain
welding. Junctions have been manufactured on Dy-Ba-Cu-O single-domains cut
either along planes parallel to the c-axis or along the ab-planes.
Microstructural and superconducting characterisations of the samples have been
performed. For both typ... | 0501163v1 |
2005-01-19 | Magnetism and Transport in YbMn2Sb2 | A new ternary intermetallic compound, namely, YbMn2Sb2, has been synthesized
and its magnetic and electrical transport properties have been studied in the
temperature range of 2 to 300 K. This compound crystallizes in a trigonal,
La2O2S type structure (space group P3bm1, No. 164) and is found to be
ferromagnetically or... | 0501450v1 |
2005-03-08 | Ultra low threshold current THz quantum cascade lasers based on buried strip-waveguides | THz quantum cascade lasers based on a novel buried cavity geometry are
demonstrated by combining double-metal waveguides with proton implantation.
Devices are realised with emission at 2.8 THz, displaying ultra low threshold
currents of 19 mA at 4K in both pulsed and continuous wave operation. Thanks to
the semiconduct... | 0503186v1 |
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