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Point-contact spectroscopy of superconductors in the nonequilibrium
state: A phase transition of the region of the superconductor near the point contact
into a new nonequi- librium state at the critical density of
nonequilibriumquasiparticles is observed. | cond-mat_supr-con |
Oxygen adsorption induced superconductivity in ultrathin FeTe film on
SrTiO3(001): The phenomenon of oxygen incorporation induced superconductivity in iron
telluride (Fe1+yTe, with antiferromagnetic (AFM) orders) is intriguing and
quite different from the case of FeSe. Until now, the microscopic origin of the
induced... | cond-mat_supr-con |
Prediction of superconducting properties of materials based on machine
learning models: The application of superconducting materials is becoming more and more
widespread. Traditionally, the discovery of new superconducting materials
relies on the experience of experts and a large number of "trial and error"
experimen... | cond-mat_supr-con |
Field-angle dependence reveals odd-parity superconductivity in
CeRh$_2$As$_2$: CeRh$_2$As$_2$ is an unconventional superconductor with multiple
superconducting phases and $T_\mathrm{c} = 0.26$ K. When $H\parallel c$, it
shows a field-induced transition at $\mu_0H^* = 4$ T from a low-field
superconducting state SC1 to... | cond-mat_supr-con |
Robust topological superconductivity in spin-orbit coupled systems at
higher-order van Hove filling: Van Hove singularities (VHSs) in proximity to the Fermi level promote
electronic interactions and generate diverse competing instabilities. It is
also known that a nontrivial Berry phase derived from spin-orbit coupli... | cond-mat_supr-con |
Microwave spectroscopy of Majorana vortex modes: The observation of zero-bias conductance peaks in vortex cores of certain
Fe-based superconductors has sparked renewed interest in vortex-bound Majorana
states. These materials are believed to be intrinsically topological in their
bulk phase, thus avoiding potentially pr... | cond-mat_supr-con |
Microscopic derivation of Ginzburg-Landau equations for coexistent
states of superconductivity and magnetism: Ginzburg-Landau (GL) equations for the coexistent states of superconductivity
and magnetism are derived microscopically from the extended Hubbard model with
on-site repulsive and nearest-neighbor attractive i... | cond-mat_supr-con |
Induced unconventional superconductivity on the surface states of
Bi$_2$Te$_3$ topological insulator: Topological superconductivity is central to a variety of novel phenomena
involving the interplay between topologically ordered phases and
broken-symmetry states. The key ingredient is an unconventional order
paramete... | cond-mat_supr-con |
Noise Performance of Lumped Element Direct Current Superconducting
Quantum Interference Device Amplifiers in the 4 GHz-8 GHz Range: We report on the noise of a lumped element Direct Current Superconducting
Quantum Interference Device amplifier. We show that the noise temperature in
the 4 GHz-8 GHz range over ranges o... | cond-mat_supr-con |
Ambient Temperature Growth and Superconducting Properties of Ti-V Alloy
Thin Films: A study on the optimization of ambient temperature growth and superconducting
properties of Ti-V alloy thin films grown on SiO2-coated Si substrate is
reported here. These films have been synthesized by co-sputtering of Ti and V
targe... | cond-mat_supr-con |
Impact of nonlocal electrodynamics on flux noise and inductance of
superconducting wires: We present exact numerical calculations of supercurrent density, inductance,
and impurity-induced flux noise of cylindrical superconducting wires in the
nonlocal Pippard regime, which occurs when the Pippard coherence length is
... | cond-mat_supr-con |
Imaging Local Sources of Intermodulation in Superconducting Microwave
Devices: This work presents new experimental results on low-temperature (LT)
characterization of local rf properties of passive superconducting (SC)
microwave devices using a novel Laser Scanning Microscope (LSM). In this
technique, a modulated las... | cond-mat_supr-con |
Room temperature Peierls distortion in small radius nanotubes: By means of {\it ab initio} simulations, we investigate the phonon band
structure and electron-phonon coupling in small 4-\AA diameter nanotubes. We
show that both the C(5,0) and C(3,3) tubes undergo above room temperature a
Peierls transition mediated by a... | cond-mat_supr-con |
A new kind of vortex pinning in superconductor / ferromagnet
nanocomposites: This paper reports the observation of hysteresis in the vortex pinning in a
superconductor / ferromagnetic epitaxial nanocomposite consisting of fcc Gd
particles incorporated in a Nb matrix. We show that this hysteretic pinning is
associated... | cond-mat_supr-con |
The effects of Zn Impurity on the Properties of Doped Cuprates in the
Normal State: We study the interplay of quantum impurity, and collective spinon and holon
dynamics in Zn doped high-T$_c$ cuprates in the normal state. The
two-dimensional t-t$^{\prime}$-J models with one and a small amount of Zn
impurity are inves... | cond-mat_supr-con |
Odd triplet superconductivity in clean and moderately disordered SFFS
junctions: We study the Josephson effect and pairing correlations in SFFS junctions that
consist of conventional superconductors (S) connected through two metallic
monodomain ferromagnets (F) with transparent and spin inactive interfaces. We
solve ... | cond-mat_supr-con |
Double-dome superconductivity under pressure in the V-based Kagome
metals AV3Sb5 (A = Rb and K): We present high-pressure electrical transport measurements on the newly
discovered V-based superconductors $A$V$_3$Sb$_5$ ($A$ = Rb and K), which have
an ideal Kagome lattice of vanadium. Two superconducting domes under p... | cond-mat_supr-con |
Numerical extension of the power law Jc(B) to zero field in thin
superconducting films: Numerical simulations of the current and field distribution in thin
superconducting films are carried out for a given material law Jc(B) and as a
function of the applied field H, taking the sample's self-field into account.
The de... | cond-mat_supr-con |
Impact of the transport supercurrent on the Josephson effect: We study the weak link between current-carrying superconductors, both
conventional and d-wave. The state of the system is controlled by two
parameters: the order parameter phase difference $\phi$ and the superfluid
velocity $v_{s}$, which parameterizes the p... | cond-mat_supr-con |
An attempt at a resonating mean-field theoretical description of thermal
behavior of two-gap superconductivity: The resonating mean-field theory (Res-MFT) has been applied and shown to
effectively describe two-gap superconductivity (SC). Particularly at T=0 using
a suitable chemical potential, the two-gap SC in MgB2 ... | cond-mat_supr-con |
Diboride compounds doped with transition metals$\unicode{x2013}$a route
to superconductivity through structure stabilization as well as defects: Recent investigations into MoB$_{2}$ have unveiled a direct connection
between a pressure-induced structural transition to a P6/mmm space group
structure and the emergence o... | cond-mat_supr-con |
Phase Separation, Competition, and Volume Fraction Control in
NaFe$_{1-x}$Co$_x$As: We report a detailed nuclear magnetic resonance (NMR) study by combined
$^{23}$Na and $^{75}$As measurements over a broad range of doping to map the
phase diagram of NaFe$_{1-x}$Co$_x$As. In the underdoped regime ($x \le$
0.017), we f... | cond-mat_supr-con |
Topological superconducting phases and Josephson effect in curved
time-reversal-invariant superconductors: We consider a Rashba spin-orbit coupled nanowire with anisotropic
spin-singlet superconducting pairing and time-reversal-invariant symmetry. We
explore the evolution of the topological superconducting phases of ... | cond-mat_supr-con |
Pressure effects on the electronic structure and magnetic properties of
infinite-layer nickelates: Motivated by the discovery of superconductivity in infinite-layer nickelates
RNiO$_2$ (R= rare-earth), and the subsequent enhancement of their T$_c$ with
pressure, we investigate the evolution of the electronic structur... | cond-mat_supr-con |
Interplay between atomic fluctuations and charge density waves in
La$_{2-x}$Sr$_{x}$CuO$_{4}$: In the cuprate superconductors, the spatial coherence of the charge density
wave (CDW) state grows rapidly below a characteristic temperature
$T_\mathrm{CDW}$, the nature of which is debated. We have combined a set of
x-ray... | cond-mat_supr-con |
Compartmentalizing the cuprate strange metal: It has long been recognized that the key to unlocking the mystery of cuprate
high-Tc superconductivity lies in understanding the anomalous normal state from
which pairs form and condense. While many of its defining properties have been
identified, they are often considered ... | cond-mat_supr-con |
Violation of Kohler rule in Ta2PdTe6 and absence of same in Nb2PdS5- A
high field magneto transport study: Here, we present the comparative study of magnetotransport properties of
recently discovered Ta2PdTe6 and Nb2PdS5 superconductors. The XRD and
magnetotransport measurements are performed on these samples to inve... | cond-mat_supr-con |
Why the lowest Landau level approximation works in strongly type II
superconductors: Higher than the lowest Landau level contributions to magnetization and
specific heat of superconductors are calculated using Ginzburg - Landau
equations approach. Corrections to the excitation spectrum around solution of
these equati... | cond-mat_supr-con |
A Model to Describe Transport Properties in
$Bi_2Sr_2(Ca_zPr_{1-z})Cu_2O_{8+y}$: A pseudo-spin model is proposed, as a means to describe some transport
properties (resistivity and Hall mobility) in
$Bi_2Sr_2(Ca_zPr_{1-z})Cu_2O_{8+y}$. Our model is based in a double-well
potential where tunneling in a given site and i... | cond-mat_supr-con |
Laser beam focusing by layered superconductor tuned by DC magnetic field: We develop a theory of the propagation and focusing of the THz Gaussian laser
beam through the layered superconductor slab of finite thickness in the
presence of an external DC magnetic field in a nonlinear regime. We show that,
in this case, foc... | cond-mat_supr-con |
Strongly correlated s-wave pairing in the n-type infinite-layer cuprate: Quasiparticle tunneling spectra of the electron-doped (n-type) infinite-layer
cuprate Sr_{0.9}La_{0.1}CuO_2 reveal characteristics that counter a number of
common phenomena in the hole-doped (p-type) cuprates. The optimally doped
Sr_{0.9}La_{0.1}C... | cond-mat_supr-con |
Corrections to the Higgs Mode Masses in Superfluid 3He: Superfluid 3He has a rich spectrum of collective modes with both massive and
massless excitations. The masses of these modes can be precisely measured using
acoustic spectroscopy and fit to theoretical models. Prior comparisons of the
experimental results with the... | cond-mat_supr-con |
Superconductor strip with transport current: Magneto-optical study of
current distribution and its relaxation: The dynamics of magnetic flux distributions across a YBaCuO strip carrying
transport current is measured using magneto-optical imaging at 20 K. The
current is applied in pulses of 40-5000 ms duration and mag... | cond-mat_supr-con |
Quantum liquid crystals in imbalanced Fermi gas: fluctuations and
fractional vortices in Larkin-Ovchinnikov states: We develop a low-energy model of a unidirectional Larkin-Ovchinnikov (LO)
state. Because the underlying rotational and translational symmetries are
broken spontaneously, this gapless superfluid is a sme... | cond-mat_supr-con |
Effects of Magnetic and non-Magnetic Impurities on the Superconducting
State of YBa$_{2}$Cu$_{3}$O$_{7-δ}$: We report Electronic Raman Scattering measurements on optimally doped Zn and
Ni substituted YBCO in A$_{1g}$ and B$_{1g}$ channels. We show that the
superconducting gap energy is independant of magnetic Ni and ... | cond-mat_supr-con |
Low-Temperature Rapid Synthesis and Superconductivity of Fe-Based
Oxypnictide Superconductors: we were able to develop a novel method to synthesize Fe-based oxypnictide
superconductors. By using LnAs and FeO as the starting materials and a
ball-milling process prior to solid-state sintering, Tc as high as 50.7 K was
... | cond-mat_supr-con |
Robust creation of entangled states of two coupled flux qubits via
dynamic control of the transition frequencies: Coherent control and the creation of entangled states are discussed in a
system of two superconducting flux qubits interacting with each other through
their mutual inductance and identically coupling to a... | cond-mat_supr-con |
Experimental study of intrinsic multiple Andreev reflections effect in
GdO(F)FeAs superconductor array junctions: We report the first observation of the intrinsic multiple Andreev reflections
effect (IMARE) in S-n-S-...-S-arrays (S = superconductor, n = normal metal)
formed by "break-junction" technique in GdO(F)FeAs... | cond-mat_supr-con |
Non-Fermi liquid behavior due to U(1) gauge field in two dimensions: We study the damping rate of massless Dirac fermions due to the U(1) gauge
field in (2+1)-dimensional quantum electrodynamics. In the absence of a Maxwell
term for the gauge field, the fermion damping rate
$\mathrm{Im}\Sigma(\omega,T)$ is found to div... | cond-mat_supr-con |
Observation of diamagnetic strange-metal phase in sulfur-copper codoped
lead apatite: By codoping sulfur and copper into lead apatite, the crystal grains are
directionally stacked and the room-temperature resistivity is reduced from
insulating to $2\times10^{-5}~\Omega\cdot$m. The resistance-temperature curve
exhibit... | cond-mat_supr-con |
Ac$_3$Ni$_2$O$_7$ and La$_2$$Ae$Ni$_2$O$_6$F ($Ae$ = Sr, Ba): Benchmark
Materials for Bilayer Nickelate Superconductivity: We theoretically propose Ac$_3$Ni$_2$O$_7$, La$_2$BaNi$_2$O$_6$F, and
La$_2$SrNi$_2$O$_6$F compounds to be benchmark materials for bilayer nickelate
superconductivity. The stable phase of Ac$_3$N... | cond-mat_supr-con |
Majorana bound states in vortex lattices on iron-based superconductors: Majorana quasi-particles may arise as zero-energy bound states in vortices on
the surface of a topological insulator that is proximitized by a conventional
superconductor. Such a system finds its natural realization in the iron-based
superconductor... | cond-mat_supr-con |
The Distribution of the Energy Gap and Josephson IcRn Product in Bi2212
by Tunneling Spectroscopy: We present direct measurements of the density of states by tunneling
spectroscopy on slightly overdoped Bi2212 single crystals at low temperature
using break-junction and point-contact techniques. We find that (i) the
v... | cond-mat_supr-con |
Chiral-Flux-Phase-Based Topological Superconductivity in Kagome Systems
with Mixed Edge Chiralities: Recent studies have attracted intense attention on the quasi-2D kagome
superconductors $ A\text{V}_3\text{Sb}_5 $ ($ A = $ K, Rb, and Cs) where the
unexpected chiral flux phase (CFP) associates with the spontaneous
ti... | cond-mat_supr-con |
Superconductivity and multiple pressure-induced phases in BaPt$_2$As$_2$: The newly discovered BaPt$_2$As$_2$ shows a structural distortion at around
275~K, followed by the emergence of superconductivity at lower temperatures.
Here we identify the presence of charge density wave (CDW) order at room
temperature and ambi... | cond-mat_supr-con |
Remote Sensing and Control of Phase Qubits: We demonstrate a remote sensing design of phase qubits by separating the
control and readout circuits from the qubit loop. This design improves
measurement reliability because the control readout chip can be fabricated
using more robust materials and can be reused to test dif... | cond-mat_supr-con |
Particle-hole symmetry breaking in the pseudogap state of
Pb0.55Bi1.5Sr1.6La0.4CuO6+d: A quantum-chemical perspective: Two Bi2201 model systems are employed to demonstrate how, beside the Cu-O
\sigma-band, a second band of purely O2p\pi character can be made to cross the
Fermi level owing to its sensitivity to the lo... | cond-mat_supr-con |
Dynamic spin-triplet order induced by alternating electric fields in
superconductor-ferromagnet-superconductor Josephson junctions: Dynamic states offer extended possibilities to control the properties of
quantum matter. Recent efforts are focused on studying the ordered states which
appear exclusively under the time... | cond-mat_supr-con |
Bound States of Defects in Superconducting LiFeAs Studied by Scanning
Tunneling Spectroscopy: Defects in LiFeAs are studied by scanning tunneling microscopy (STM) and
spectroscopy (STS). Topographic images of the five predominant defects allow
the identification of their position within the lattice. The most commonly... | cond-mat_supr-con |
Anomalous Electronic Susceptibility in Bi2sr2cuo6+d: We report magnetic susceptibility performed on overdoped Bi2Sr2CuO6+d powders
as a function of oxygen doping d and temperature T. The decrease of the spin
susceptibility chis with increasing T is confirmed. At sufficient high
temperature, chis presents an unusual lin... | cond-mat_supr-con |
NMR Investigation of the Quasi One-dimensional Superconductor
K$_{2}$Cr$_{3}$As$_{3}$: We report $^{75}$As NMR measurements on the new quasi one-dimensional
superconductor K$_{2}$Cr$_{3}$As$_{3}$ ($T_{c} \sim 6.1$~K) [J.\ K.\ Bao et
al., Phys. Rev. X {\bf 5}, 011013 (2015)]. We found evidence for strong
enhancement o... | cond-mat_supr-con |
Effects of strain on the electronic structure, superconductivity, and
nematicity in FeSe studied by angle-resolved photoemission spectroscopy: One of central issues in iron-based superconductors is the role of structural
change to the superconducting transition temperature (T_c). It was found in
FeSe that the lattice... | cond-mat_supr-con |
Vortex-antivortex nucleation in magnetically nanotextured
superconductors: Magnetic-field-driven and thermal scenarios: Within the Ginzburg-Landau formalism, we predict two novel mechanisms of
vortex-antivortex nucleation in a magnetically nanostructured superconductor.
Although counterintuitive, nucleation of vortex... | cond-mat_supr-con |
Enhanced Superconductivity on the Tetragonal Lattice in FeSe under
Hydrostatic Pressure: Superconductivity under pressure in FeSe ($T_{\rm c}$$\sim$7.5 K) has been
investigated using single-crystal specimens through the measurements of DC
magnetization and electrical resistivity. A characteristic three-step increase
... | cond-mat_supr-con |
Triplanar Model for the Gap and Penetration Depth in YBCO: YBaCuO_7 is a trilayer material with a unit cell consisting of a CuO_2
bilayer with a CuO plane of chains in between. Starting with a model of
isolated planes coupled through a transverse matrix element, we consider the
possibility of intra as well as interplan... | cond-mat_supr-con |
Reduction of the electrodynamics of superconductors to those for
conductors with the incorporation of spatial dispersion: We derive general frequency dependencies of the surface impedance modulus for
conductors without the dc dissipation, i. e. for superconductors or perfect
conductors. The frequency-dependent surfac... | cond-mat_supr-con |
The maximal superconductivity in proximity to charge density wave
quantum critical point in Cu$_x$TiSe$_2$: Superconductivity emerges in $1T$-TiSe$_2$ when its charge density wave (CDW)
order is suppressed by Cu intercalation or pressure. Since the CDW state is
thought to be an excitonic insulator, an interesting que... | cond-mat_supr-con |
Pressure-induced magnetic collapse and metallization of
$\mathrm{TlF}{\mathrm{e}}_{1.6}\mathrm{S}{\mathrm{e}}_{2}$: The crystal structure, magnetic ordering, and electrical resistivity of
TlFe1.6Se2 were studied at high pressures. Below ~7 GPa, TlFe1.6Se2 is an
antiferromagnetically ordered semiconductor with a ThCr2... | cond-mat_supr-con |
Hidden symmetry and knot solitons in a charged two-condensate Bose
system: We show that a charged two-condensate Ginzburg-Landau model or equivalently a
Gross-Pitaevskii functional for two charged Bose condensates, can be mapped
onto a version of the nonlinear O(3) $\sigma$-model. This implies in particular
that such... | cond-mat_supr-con |
Effects of the Spin-Orbit Coupling and the Superconductivity in
simple-cubic alpha-Polonium: We have investigated the mechanism of stabilizing the simple-cubic (SC)
structure in polonium (alpha- Po), based on the phonon dispersion calculations
using the first-principles all-electron band method. We have demonstrated ... | cond-mat_supr-con |
Evidence for quasi-two-dimensional superconductivity in infinite-layer
nickelates: After being expected as a promising analogue to cuprates for decades,
superconductivity was recently discovered in infinite-layer nickelates,
providing new opportunities to explore mechanisms of high-temperature
superconductivity. Howe... | cond-mat_supr-con |
Electronic structure studies of BaFe2As2 by angle-resolved photoemission
spectroscopy: We report high resolution angle-resolved photoemission spectroscopy (ARPES)
studies of the electronic structure of BaFe$_2$As$_2$, which is one of the
parent compounds of the Fe-pnictide superconductors. ARPES measurements have
bee... | cond-mat_supr-con |
Correlation of Fe-based Superconductivity and Electron-Phonon Coupling
in an FeAs/Oxide Heterostructure: Interfacial phonons between iron-based superconductors (FeSCs) and perovskite
substrates have received considerable attention due to the possibility of
enhancing preexisting superconductivity. Using scanning tunne... | cond-mat_supr-con |
Fragmentation of Fast Josephson Vortices and Breakdown of Ordered States
by Moving Topological Defects: Topological defects such as vortices, dislocations or domain walls define
many important effects in superconductivity, superfluidity, magnetism, liquid
crystals, and plasticity of solids. Here we address the breakd... | cond-mat_supr-con |
Persistent Charge Density Wave Memory in a Cuprate Superconductor: Although charge density wave (CDW) correlations appear to be a ubiquitous
feature of the superconducting cuprates, their disparate properties suggest a
crucial role for coupling or pinning of the CDW to lattice deformations and
disorder. While diffracti... | cond-mat_supr-con |
Intrinsic Properties of Stoichiometric LaOFeP: DC and ac magnetization, resistivity, specific heat, and neutron diffraction
data reveal that stoichiometric LaOFeP is metallic and non-superconducting
above T = 0.35 K, with gamma = 12.5 mJ/mol*K. Neutron diffraction data at room
temperature and T = 10 K are well describe... | cond-mat_supr-con |
Striking Zn impurity effect on the Fe-based superconductor
BaFe1.87Co0.13As2: Nonmagnetic impurity effect was studied on the n-type Fe-based superconductor
BaFe1.87Co0.13As2 (Tc = 25 K) by a successful Zn substitution for Fe up to 7
at.%. Magnetic susceptibility, electrical resistivity, specific heat, and Hall
coeffi... | cond-mat_supr-con |
Huge magnetostriction in superconducting single-crystalline
BaFe$_{1.908}$Ni$_{0.092}$As$_{2}$: The performance of iron-based superconductors in high magnetic fields plays
an important role for their practical application. In this work, we measured
the magnetostriction and magnetization of BaFe$_{1.908}$Ni$_{0.092}$A... | cond-mat_supr-con |
Manifesto for a higher Tc -- lessons from pnictides and cuprates: We explore energy scales, features in the normal state transport, relevant
interactions and constraints for the pairing mechanisms in the high-Tc cuprates
and Fe-pnictides. Based on this analysis we attempt to identify a number of
attributes of supercond... | cond-mat_supr-con |
Magnetic and structural properties of the iron silicide superconductor
LaFeSiH: The magnetic and structural properties of the recently discovered
pnictogen/chalcogen-free superconductor LaFeSiH ($T_c\simeq10$~K) have been
investigated by $^{57}$Fe synchrotron M{\"o}ssbauer source (SMS) spectroscopy,
x-ray and neutron... | cond-mat_supr-con |
Interplay between collective modes in hybrid electron gas-superconductor
structures: We study hybridization of collective plasmon and
Carlson-Goldman-Artemenko-Volkov modes in a hybrid system, consisting of a
two-dimensional layers of electron gas in the normal state and superconductor,
coupled by long-range Coulomb ... | cond-mat_supr-con |
Non-thermal origin of nonlinear transport across magnetically induced
superconductor-metal-insulator transition: We have studied the effect of perpendicular magnetic fields and temperatures
on the nonlinear electronic transport in amorphous Ta superconducting thin
films. The films exhibit a magnetic field induced met... | cond-mat_supr-con |
Modification of the effective action approach for the Leggett mode: The modified procedure to get the effective action is discussed. Careful
observation of phase of electrons leads to the conclusion that
Hubbard-Stratonovich field should be pair wavefunction, instead of gap. The
modified theory is valid for arbitrary s... | cond-mat_supr-con |
Collision Dynamics of Two Bose-Einstein Condensates in the Presence of
Raman Coupling: A collision of two-component Bose-Einstein condensates in the presence of
Raman coupling is proposed and studied by numerical simulations. Raman
transitions are found to be able to reduce collision-produced irregular
excitations by... | cond-mat_supr-con |
Hall-Lorenz ratio of YBa2Cu3O7 using Ionization energy based Fermi-Dirac
statistics and charge-spin separation: The temperature dependent properties of heat capacity, heat conductivity and
Hall-Lorenz ratio have been solved numerically after taking the previously
proposed ionization energy based Fermi-Dirac statistic... | cond-mat_supr-con |
Comment on "Enhanced two-dimensional properties of the four-layered
cuprate high-Tc superconductor TlBa-2Ca-3Cu-4O-y": We reanalyze published magnetization data and demonstrate that the conclusion
of the original authors, claiming enhanced two-dimensional properties of the
cuprate superconductor Tl-1234, is not suppo... | cond-mat_supr-con |
Effect of biaxial strain on the phase transitions of Ca(Fe1-xCox)2As2: We study the effect of applied strain as a physical control parameter for the
phase transitions of Ca(Fe1-xCox)2As2 using resistivity, magnetization, x-ray
diffraction and 57Fe M\"ossbauer spectroscopy. Biaxial strain, namely
compression of the basa... | cond-mat_supr-con |
Optical sum increase due to electron undressing: For a system with a fixed number of electrons, the total optical sum is a
constant, independent of many-body interactions, of impurity scattering and of
temperature. For a single band in a metal, such a sum rule is no longer
independent of the interactions or temperature... | cond-mat_supr-con |
Superconductivity in layered CeO0.5F0.5BiS2: We report appearance of superconductivity in CeO0.5F0.5BiS2. The bulk
polycrystalline samples CeOBiS2 and CeO0.5F0.5BiS2 are synthesized by
conventional solid state reaction route via vacuum encapsulation technique.
Detailed structural analysis showed that the studied CeO0.5... | cond-mat_supr-con |
Negative in-plane and out-of-plane magnetoresistivities in optimally
doped Bi2Sr2Ca0.8Y0.2Cu2O8+d single crystal: Both the in-plane and out-of-plane magnetoresistivities have been measured in
the normal state of an optimally doped Bi2Sr2Ca0.8Y0.2Cu2O8+d single crystal
with a magnetic field applied parallel and perpen... | cond-mat_supr-con |
Superconductivity of the New Medium-Entropy Alloy V4Ti2W with a
Body-Centered Cubic Structure: Medium- and high-entropy alloy (MEA and HEA) superconductors have attracted
considerable interest since their discovery. This paper reports the
superconducting properties of ternary tungsten-containing MEA V4Ti2W for the
fi... | cond-mat_supr-con |
Spectrum of low energy excitations in the vortex state: comparison of
Doppler shift method to quasiclassical approach: We present a detailed comparison of numerical solutions of the quasiclassical
Eilenberger equations with several approximation schemes for the density of
states of s- and d-wave superconductors in th... | cond-mat_supr-con |
Phase diagram of nickelate superconductors calculated by dynamical
vertex approximation: We review the electronic structure of nickelate superconductors with and
without effects of electronic correlations. As a minimal model we identify the
one-band Hubbard model for the Ni 3$d_{x^2-y^2}$ orbital plus a pocket around... | cond-mat_supr-con |
Thermodynamic evidence for nematic superconductivity in
Cu$_x$Bi$_2$Se$_3$: Unconventional superconductivity is characterized by the spontaneous symmetry
breaking of the macroscopic superconducting wavefunction in addition to the
gauge symmetry breaking, such as rotational-symmetry breaking with respect to
the underl... | cond-mat_supr-con |
Magnetic hysteresis of a superconducting microstrip resonator with a
high edge barrier: We investigate the magnetic hysteresis of a superconducting microstrip
resonator with a high edge barrier. We measure the magnetic hysteresis while
either sweeping a magnetic field or tuning the edge barrier by high microwave
curr... | cond-mat_supr-con |
Thermally assisted quantum vortex tunneling in the Hall and dissipative
regime: Quantum vortex tunneling is studied for the case where the Hall and the
dissipative dynamics are simultaneously present. For a given temperature, the
magnetization relaxation rate is calculated as a function of the external
current and th... | cond-mat_supr-con |
Transport signatures of fragile-glass dynamics in the melting of the
two-dimensional vortex lattice: In two-dimensional (2D) systems, the melting from a solid to an isotropic
liquid can occur via an intermediate phase that retains orientational order.
However, in 2D superconducting vortex lattices, the effect of orie... | cond-mat_supr-con |
Superconducting mechanism for the cuprate Ba$_2$CuO$_{3+δ}$ based
on a multiorbital Lieb lattice model: For the recently discovered cuprate superconductor
$\mathrm{Ba_{2}CuO_{3+\delta}}$, we propose a lattice structure which resembles
the model considered by Lieb to represent the vastly oxygen-deficient material.
We ... | cond-mat_supr-con |
Helium-Three in Aerogel: Liquid 3He confined in silica aerogel provides us with a unique system to
study the effects of quenched disorder on the properties of a strongly
correlated quantum liquid. The superfluid phases display interplay between
disorder and complex symmetry-breaking. | cond-mat_supr-con |
Pressure effects on the unconventional superconductivity of the
noncentrosymmetric LaNiC2: The unconventional superconductivity in the noncentrosymmetric LaNiC$_2$, and
its evolution with pressure, is analyzed basing on the {\it ab initio}
computations and the full Eliashberg formalism. First principles calculations
... | cond-mat_supr-con |
NMR evidence for an intimate relationship between antiferromagnetic spin
fluctuations and extended s-wave superconductivity in mono-crystalline
SrFe2(As_{1-x}P_{x})2: We report systematic 31P-NMR study on iron (Fe)-based superconductors
SrFe2(As_{1-x}P_{x})2 (Sr122AsP), in which a superconducting (SC) transition
te... | cond-mat_supr-con |
Origin of Topological Surface Superconductivity in
FeSe$_{0.45}$Te$_{0.55}$: The engineering of Majorana zero modes in topological superconductors, a new
paradigm for the realization of topological quantum computing and
topology-based devices, has been hampered by the absence of materials with
sufficiently large supe... | cond-mat_supr-con |
Probing the topological band structure of diffusive multiterminal
Josephson junction devices with conductance measurements: The energy of an Andreev bound state in a clean normal metal in contact with
two superconductors disperses with the difference $\Delta \phi$ in the
superconducting phase between the superconduct... | cond-mat_supr-con |
Controlling superconductivity of CeIrIn$_5$ microstructures by substrate
selection: Superconductor/metal interfaces are usually fabricated in heterostructures
that join these dissimilar materials. A conceptually different approach has
recently exploited the strain sensitivity of heavy-fermion superconductors,
selecti... | cond-mat_supr-con |
Generic Finite Size Enhancement of Pairing in Mesoscopic Fermi Systems: The finite size dependent enhancement of pairing in mesoscopic Fermi systems
is studied under the assumption that the BCS approach is valid and that the two
body force is size independent. Different systems are investigated such as
superconducting ... | cond-mat_supr-con |
Pair Density Waves from Local Band Geometry: A band-projection formalism is developed for calculating the superfluid
weight in two-dimensional multi-orbital superconductors with an
orbital-dependent pairing. It is discovered that, in this case, the band
geometric superfluid stiffness tensor can be locally non-positive-... | cond-mat_supr-con |
Electron-Phonon Superconductivity in LaO$_{0.5}$F$_{0.5}$BiSe$_{2}$: We report density functional calculations of the electronic structure, Fermi
surface, phonon spectrum and electron--phonon coupling for newly discovered
superconductor LaO$_{0.5}$F$_{0.5}$BiSe$_{2}$. Significant similarity between
LaO$_{0.5}$F$_{0.5}$... | cond-mat_supr-con |
Critical Velocity in the Presence of Surface Bound States in Superfluid
$^3$He-B: A microelectromechanical oscillator with a gap of 1.25 $\mu$m was immersed in
superfluid $^3$He-B and cooled below 250 $\mu$K at various pressures.
Mechanical resonances of its shear motion were measured at various levels of
driving for... | cond-mat_supr-con |
Reinterpretation of the equilibrium magnetization of a Tl-based single
crystal. Another phase transition in the mixed state of high-Tc
superconductors?: We apply a recently developed scaling procedure for the analysis of the
equilibrium magnetization M that was measured on a Tl-based single crystal and
was recently... | cond-mat_supr-con |
Finite-size effects in hyperuniform vortex matter: Novel hyperuniform materials are emerging as an active field of applied and
basic research since they can be designed to have exceptional physical
properties. This ubiquitous state of matter presents a hidden order that is
characterized by the density of constituents o... | cond-mat_supr-con |
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