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Correlated trends of coexisting magnetism and superconductivity in
optimally electron-doped oxy-pnictides: We report on the recovery of the short-range static magnetic order and on the
concomitant degradation of the superconducting state in optimally F-doped
SmFe_(1-x)Ru_(x)AsO_0.85F_0.15 for 0.1< x<0.6. The two redu... | cond-mat_supr-con |
Fractional Flux Plateau in Magnetization Curve of Multicomponent
Superconductor Loop: Time-reversal symmetry (TRS) may be broken in superconductors with three or
more condensates interacting repulsively, yielding two degenerate states
specified by chirality of gap functions. We consider a loop of such
superconductor ... | cond-mat_supr-con |
Quantum detector of noise based on a system of asymmetric Al
superconducting rings: The quantum rectification effect observed on asymmetric superconducting loops
is proposed to use as a basic of a noise detector with maximum sensitivity. The
measurements show that a critical amplitude of noise or ac current decreases... | cond-mat_supr-con |
Upper bounds on the superfluid stiffness and superconducting $T_c$:
Applications to twisted-bilayer graphene and ultra-cold Fermi gases: Understanding the material parameters that control the superconducting
transition temperature $T_c$ is a problem of fundamental importance. In many
novel superconductors, phase fluc... | cond-mat_supr-con |
Spin flip scattering engendered quantum spin torque in a Josephson
junction: We examine a Josephson junction with two Ferromagnets and a spin flipper
sandwiched between two superconductors. In such Ferromagnetic Josephson
junctions, equilibrium spin torque exists only when Ferromagnets are
misaligned. This is explain... | cond-mat_supr-con |
Continuum dual theory of the transition in 3D lattice superconductor: A recently proposed form of dual theory for the three dimensional
superconductor is rederived starting from the lattice electrodynamics and
studied by renormalization group. The superfluid density below and close to the
transition vanishes as inverse... | cond-mat_supr-con |
Fermi surface reconstruction due to hidden rotating antiferromagnetism
in n and p-type high-$T_C$ cuprates: The Fermi surface calculated within the rotating antiferromagentism theory
undergoes a topological change when doping changes from p-type to n-type, in
qualitative agreement with experimental data for n-type cu... | cond-mat_supr-con |
Giant Triplet Proximity Effect in $π$-biased Josephson Junctions with
Spin-Orbit Coupling: In diffusive Josephson junctions the phase-difference $\phi$ between the
superconductors strongly influences the spectroscopic features of the layer
separating them. The observation of a uniform minigap and its phase modulation... | cond-mat_supr-con |
Fixed Number and Quantum Size Effects in Nanoscale Superconductors: In recent experiments on nanoscale Al particles, whose electron number was
fixed by charging effects, a ``negative gap'' was observed in particles with an
odd number of electrons. This observation has called into question the use of a
grand canonical e... | cond-mat_supr-con |
The dc-Josephson effect with more than four superconducting leads: By definition, the $p$-terminal dc-Josephson current is sensitive to the
superconducting phase variables of $p$ terminals. In the paper, we establish
protocol for direct detection of the $p$-terminal dc-Josephson effect with
$p\ge 3$ in a device contain... | cond-mat_supr-con |
Dynamical Structure Factor of Fulde-Ferrell-Larkin-Ovchinnikov
Superconductors: Superconductor with a spatially-modulated order parameter is known as
Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superconductor. Using the
time-dependent Ginzburg-Landau (TDGL) formalism we have theoretically studied
the temporal behaviour o... | cond-mat_supr-con |
Identifying the pairing mechanism in Fe-As based superconductors: gaps
and isotope effects: The temperature dependencies of the coupled superconducting gaps, observed in
Fe-As based superconducting compounds is calculated and a universal temperature
scaling observed which is only present if the coupled order paramete... | cond-mat_supr-con |
Controllable tunnelling of single flux-quanta mediated by quantum
phase-slip in disordered superconducting loops: Quantum phase-slip (QPS) is the exact dual to the well-known Josephson
effect. Although there are numerous proposals for applications of QPS devices,
experimental work to develop these remains in the rela... | cond-mat_supr-con |
Chiral CP^2 skyrmions in three-band superconductors: It is shown that under certain conditions, three-component superconductors
(and in particular three-band systems) allow stable topological defects
different from vortices. We demonstrate the existence of these excitations,
characterized by a $CP^2$ topological invari... | cond-mat_supr-con |
Improved Single-Crystal Growth of Sr$_2$RuO$_4$: High-quality single crystals are essentially needed for the investigation of
the novel bulk properties of unconventional superconductors. The availability
of such crystals grown by the floating-zone method has helped to unveil the
unconventional superconductivity of the ... | cond-mat_supr-con |
Pressure tuning of Fermi surface topology of optimally doped
BaFe$_{1.9}$Ni$_{0.1}$As$_{2}$: The superconducting, transport, and structural properties of optimally
electron-doped BaFe$_{1.9}$Ni$_{0.1}$As$_{2}$ are investigated by combining the
electrical resistance and synchrotron X-ray diffraction measurements at hi... | cond-mat_supr-con |
Nature of carrier doping in T'-La1.8-xEu0.2SrxCuO4 studied by X-Ray
Photoemission and Absorption Spectroscopy: Recently, hole-doped superconducting cuprates with the T'-structure
La1.8-xEu0.2SrxCuO4 (LESCO) have attracted a lot of attention. We have
performed x-ray photoemission and absorption spectroscopy measuremen... | cond-mat_supr-con |
Substrate mediated nitridation of niobium into superconducting Nb2N thin
films for phase slip study: Here we report a novel nitridation technique for transforming niobium into
hexagonal Nb2N which appears to be superconducting below 1K. The nitridation is
achieved by high temperature annealing of Nb films grown on Si... | cond-mat_supr-con |
Generic nodeless Larkin Ovchinnikov states due to singlet-triplet mixing: Larkin-Ovchinnikov (LO) states typically have a singlet-gap that vanishes
along real-space lines. These real-space nodes lead to Andreev midgap states
which can serve as a signature of LO pairing. We show that at these nodes, an
odd-parity, spin-... | cond-mat_supr-con |
Upper critical magnetic field of $Ln$O$_{0.5}$F$_{0.5}$BiS$_2$ ($Ln$ =
La, Nd) superconductors at ambient and high pressure: The upper critical field $H_{c2}$ of polycrystalline samples of
$Ln$O$_{0.5}$F$_{0.5}$BiS$_{2}$ ($Ln$ = La, Nd) at ambient pressure (tetragonal
structure) and high pressure (HP) (monoclinic str... | cond-mat_supr-con |
Fermi surface reconstruction in electron-doped cuprates without
antiferromagnetic long-range order: Fermi surface (FS) topology is a fundamental property of metals and
superconductors. In electron-doped cuprate Nd2-xCexCuO4 (NCCO), an unexpected
FS reconstruction has been observed in optimal- and over-doped regime
(x... | cond-mat_supr-con |
Tuning competing orders in La2-xSrxCuO4 cuprate superconductors by the
application of an external magnetic field: We report the results of a combined muon spin rotation and neutron scattering
study on La2-xSrxCuO4 in the vicinity of the so-called 1/8-anomaly. Application
of a magnetic field drives the system towards ... | cond-mat_supr-con |
Bosonic Spectral Function in HTSC Cuprates: Part I - Experimental
Evidence for Strong Electron-Phonon Interaction: In Part I we discuss accumulating experimental evidence related to the
structure and origin of the bosonic spectral function \alpha ^{2}F in
high-temperature superconducting (HTSC) cuprates near optimal ... | cond-mat_supr-con |
Effect of doping on the magnetostructural ordered phase of iron
arsenides: A comparative study of the resistivity anisotropy in the doped
BaFe$_2$As$_2$ with doping into three different sites: In order to unravel a role of doping in the iron-based superconductors, we
investigated the in-plane resistivity for BaFe$_... | cond-mat_supr-con |
Transport and magnetic properties of La-doped CaFe$_2$As$_2$: We measured the transport properties and susceptibility of single crystals
Ca$_{1-x}$La$_x$Fe$_2$As$_2$(x=0, 0.05, 0.1, 0.15, 0.19 and 0.25). Large
in-plane resistivity anisotropy similar to that in Co-doped 122 iron-pnictides
is observed although no transit... | cond-mat_supr-con |
Domes of $T_c$ in single-band and multiband superconductors with
finite-range attractive interactions: The rise and fall of the superconducting transition temperature $T_c$ upon
tuning carrier density or external parameters, such as pressure or magnetic
field, is ubiquitously observed in a wide range of quantum mater... | cond-mat_supr-con |
Numerical Study of Energy Loss by a Nanomechanical Oscillator Coupled to
a Cooper Pair Box: We calculate the dynamics of a nanomechanical oscillator (NMO) coupled
capacitively to a Cooper pair box (CPB), by solving a stochastic Schrodinger
equation with two Lindblad operators. Both the NMO and the CPB are assumed
dis... | cond-mat_supr-con |
High-energy ball milling and synthesi temperature study to improve
superconducting properties of MgB2 ex-situ tapes and wires: MgB2 monofilamentary nickel-sheated tapes and wires were fabricated by means
of the ex-situ powder-in-tube method using either high-energy ball milled and
low temperature synthesized powders.... | cond-mat_supr-con |
Spectral signatures of modulated d-wave superconducting phases: We calculate within a mean-field theory the spectral signatures of various
striped d-wave superconducting phases. We consider both in-phase and anti-phase
modulations of the superconducting order across a stripe boundary, and the
effects of coexisting inho... | cond-mat_supr-con |
Sublattice-sensitive Majorana Modes: For two- and three-dimensional topological insulators whose unit cells
consist of multiple sublattices, the boundary terminating at which type of
sublattice can affect the time-reversal invariant momentum at which the Dirac
points of helical boundary states are located. Through a ge... | cond-mat_supr-con |
On a possibility of effective electron attraction without "a glue": With the means of Schrodinger equation a two electron problem is considered.
It is shown that electrons in a periodic potential might experience effective
attraction without any mediating agents; which means electrons in HTSC might
have effective attra... | cond-mat_supr-con |
High-energy magnetic excitations in overdoped
La$_{2-x}$Sr$_{x}$CuO$_{4}$ studied by neutron and resonant inelastic X-ray
scattering: We have performed neutron inelastic scattering and resonant inelastic X-ray
scattering (RIXS) at the Cu-$L_3$ edge to study high-energy magnetic
excitations at energy transfers of mo... | cond-mat_supr-con |
Analysis of the paraconductivity in underdoped $La_{2-x}Sr_xCuO_4$ thin
films using high magnetic fields: The contribution of superconducting fluctuations to the conductivity, or
paraconductivity is studied in the underdoped regime of $La_{2-x}Sr_xCuO_4$
cuprates. A perpendicular magnetic field up to 50 T is applied ... | cond-mat_supr-con |
Evidence for unusual superconducting correlations coexisting with stripe
order in La(1.875)Ba(0.125)CuO(4): We present new x-ray and neutron scattering measurements of stripe order in
La(1.875)Ba(0.125)CuO(4), along with low-field susceptibility, thermal
conductivity, and specific heat data. We compare these with pre... | cond-mat_supr-con |
Supercurrent induced domain wall motion: We study the dynamics of a magnetic domain wall, inserted in, or juxtaposed
to, a conventional superconductor, via the passage of a spin polarized current
through a FSF junction. Solving the Landau-Lifshitz-Gilbert equation of motion
for the magnetic moments we calculate the vel... | cond-mat_supr-con |
Simulation of some quantum gates, with decoherence: Methods and results for numerical simulations of one and two interacting
rf-Squid systems suitable for adiabatic quantum gates are presented. These are
based on high accuracy numerical solutions to the static and time dependent
Schroedinger equation for the full Squid... | cond-mat_supr-con |
Switching of intra-orbital spin excitations in electron-doped iron
pnictide superconductors: We investigate the doping dependence of the magnetic excitations in
two-superconducting-dome-system LaFeAsO1-xDx. Using inelastic neutron
scattering, spin fluctuations at different wavenumbers were observed under both
superco... | cond-mat_supr-con |
Topological superconducting transition driven by time-reversal-symmetry
breaking: Three-dimensional line-nodal superconductors exhibit nontrivial topology,
which is protected by the time-reversal symmetry. Here we investigate four
types of short-range interaction between the gapless line-nodal fermionic
quasiparticle... | cond-mat_supr-con |
Superfluid transition in disordered dipolar Fermi gases: We consider a weakly interacting two-component Fermi gas of dipolar particles
(magnetic atoms or polar molecules) in the two-dimensional geometry. The
dipole-dipole interaction (together with the short-range interaction at
Feshbach resonances) for dipoles perpend... | cond-mat_supr-con |
Tunneling spectra for ($d_{x^2-y^2}+is$)-wave superconductors versus
tunneling spectra for ($d_{x^2-y^2}+id_{xy}$)-wave superconductors: The tunneling conductance spectra of a normal metal / insulator / singlet
superconductor is calculated from the reflection amplitudes using the
Blonder-Tinkham-Klapwijk (BTK) formul... | cond-mat_supr-con |
Ab initio calculations of the electronic structure of cuprates using
large scale cluster techniques: The local electronic structures of La2CuO4, three members of the
Yttrium-family (YBa2Cu3O6, YBa2Cu3O7, and YBa2Cu4O8), and to some extent of
Nd2CuO4 have been determined using all-electron ab-initio cluster calculatio... | cond-mat_supr-con |
Disorder-induced time effect in the antiferromagnetic domain state of
Fe1+yTe: We report on temperature-dependent soft X-ray absorption spectroscopy (XAS)
measurements utilizing linearly polarized synchrotron radiation to probe
magnetic phase transitions in iron-rich Fe1+yTe. X-ray magnetic linear
dichroism (XMLD) si... | cond-mat_supr-con |
Thermal Conductivity in 3D NJL Model Under External Magnetic Field: The thermal conductivity of the (2+1)-dimensional NJL model in the presence
of a constant magnetic field is calculated in the mean-field approximation and
its different asymptotic regimes are analyzed. Taking into account the
dynamical generation of a ... | cond-mat_supr-con |
Quasiparticle Thermal Conductivities in a Type-II Superconductor at High
Magnetic Field: We present a calculation of the quasiparticle contribution to the
longitudinal thermal conductivities as well as transverse (Hall) thermal
conductivity of an extreme type-II superconductor in a high magnetic field and
at low temp... | cond-mat_supr-con |
Anomalous Dimension of Dirac's Gauge-Invariant Nonlocal Order Parameter
in Ginzburg-Landau Field Theory: In a Ginzburg-Landau theory with $n$ fields, the anomalous dimension of the
gauge-invariant nonlocal order parameter defined by the long-distance limit of
Dirac's gauge-invariant two-point function is calculated. ... | cond-mat_supr-con |
Carbonaceous sulfur hydride system: the strong-coupled room-temperature
superconductor with a low value of Ginzburg-Landau parameter: The superconducting state in Carbonaceous Sulfur Hydride (C-S-H) system is
characterized by the record-high critical temperature of $288$~K experimentally
observed at $\sim$267 GPa. He... | cond-mat_supr-con |
Flux growth at ambient pressure of millimeter-sized single crystals of
LaFeAsO, LaFeAsO1-xFx, and LaFe1-xCoxAsO: Millimeter-sized single crystals of LaFeAsO, LaFeAsO1-xFx, and LaFe1-xCoxAsO
were grown in NaAs flux at ambient pressure. The detailed growth procedure and
crystal characterizations are reported. The as-gr... | cond-mat_supr-con |
Temperature-doping phase diagrams for Ba(Fe1-xTMx)2As2(TM=Ni, Cu, Cu /
Co) single crystals: Microscopic, structural, transport and thermodynamic measurements of single
crystalline Ba(Fe1-xTMx)2As2 (TM = Ni and Cu) series, as well as two mixed TM =
Cu / Co series, are reported. All the transport and thermodynamic meas... | cond-mat_supr-con |
Pairing Mechanism of the Heavily Electron Doped FeSe Systems: Dynamical
Tuning of the Pairing Cutoff Energy: We studied pairing mechanism of the heavily electron doped FeSe (HEDIS)
systems, which commonly have one incipient hole band -- a band top below the
Fermi level by a finite energy distance $\epsilon_b$ -- at $... | cond-mat_supr-con |
Structure Re-determination and Superconductivity Observation of Bulk 1T
MoS2: 2H MoS2 has been intensively studied because of layer-dependent electronic
structures and novel physical properties. Though the metastable 1T MoS2 with
the [MoS6] octahedron was observed from the microscopic area, the true crystal
structure... | cond-mat_supr-con |
$^{23}$Na NMR Study of Layered Superconductor $Na_xCoO_2- yH_2O$: We measured $^{23}$Na-NMR spectra and nuclear spin-lattice relaxation rates
$^{23}(1/T_1)$ of superconducting and non-superconducting bilayer hydrate
$Na_xCoO_2-yH_2O$ (x ~ 0.3, y ~ 1.3). The central resonance frequency shows a
small but various shift du... | cond-mat_supr-con |
Multi-component strongly attractive Fermi gas: a color superconductor in
a one-dimensional harmonic trap: Recent advances in ultra-cold atomic Fermi gases make it possible to achieve
a fermionic superfluid with multiple spin components. In this context, any
mean-field description is expected to fail, owing to the pre... | cond-mat_supr-con |
Resistivity tensor of vortex-lattice states in Josephson junction arrays: Two-dimensional Josephson junction arrays frustrated by a perpendicular
magnetic field are predicted to form a cascade of distinct vortex lattice
states. Here, we show that the resistivity tensor provides both structural and
dynamical information... | cond-mat_supr-con |
Quantum Superconductor-Metal Transition in a 2D Proximity-Coupled Array: We construct a theory of quantum fluctuatons in a regular array of small
superconductive islands connected via low-resistance tunnel contacts to a dirty
thin metal film.
Electron-electron interaction in the film is assumed to be repulsive. The
s... | cond-mat_supr-con |
Spectroscopy of Magnetic Excitations in Magnetic Superconductors Using
Vortex Motion: In magnetic superconductors a moving vortex lattice is accompanied by an ac
magnetic field which leads to the generation of spin waves. At resonance
conditions the dynamics of vortices in magnetic superconductors changes
drastically... | cond-mat_supr-con |
Electronic Structure of Superconducting Infinite-Layer Lanthanum
Nickelates: Revealing the momentum-resolved electronic structure of infinite-layer
nickelates is essential for understanding this new class of unconventional
superconductors, but has been hindered by the formidable challenges in
improving the sample qua... | cond-mat_supr-con |
Coexistence of Two Sharp-Mode Couplings and Their Unusual Momentum
Dependence in the Superconducting State of Bi2Sr2CaCu2O8+d Superconductor
Revealed by Laser-Based Angle-Resolved Photoemission: Super-high resolution laser-based angle-resolved photoemission measurements
have been carried out on Bi2Sr2CaCu2O8+d (Bi2... | cond-mat_supr-con |
Intrinsic superconducting diode effects in tilted Weyl and Dirac
semimetals: We explore Weyl and Dirac semimetals with tilted nodes as platforms for
realizing an intrinsic superconducting diode effect. Although tilting breaks
sufficient spatial and time-reversal symmetries, we prove that -- at least for
conventional ... | cond-mat_supr-con |
Superconductivity in the doped topological insulator Cu$_x$Bi$_2$Se$_3$
under high pressure: We report a high-pressure single crystal study of the topological
superconductor Cu$_x$Bi$_2$Se$_3$. Resistivity measurements under pressure show
superconductivity is depressed smoothly. At the same time the metallic behavior... | cond-mat_supr-con |
Single-crystal growth and extremely high H_c2 of 12442-type Fe-based
superconductor KCa_2Fe_4As_4F_2: Millimeter sized single crystals of KCa_2Fe_4As_4F_2 were grown using a
self-flux method. The chemical compositions and crystal structure were
characterized carefully. Superconductivity with the critical transition T... | cond-mat_supr-con |
Complex superconductivity in the noncentrosymmetric compound Re$_{6}$Zr: We report the electronic structure, synthesis, and measurements of the
magnetic, transport, and thermal properties of the polycrystalline
noncentrosymmetric compound Re$_{6}$Zr. We observed a bulk superconducting
transition at temperature $T_{c}$ ... | cond-mat_supr-con |
Superconducting Gap Structure of LaFePO Studied by Thermal Conductivity: The superconducting gap structure of LaFePO ($T_c=7.4 $K) is studied by
thermal conductivity ($\kappa$) at low temperatures in fields $H$ parallel and
perpendicular to the c axis. A clear two-step field dependence of $\kappa(H)$
with a characteris... | cond-mat_supr-con |
Raman scattering from a superconductivity-induced bound state in $MgB_2$: It is shown that the sharp peak in the $E_{2g}$ Raman spectrum of
superconducting $MgB_2$ is due to a bound state caused by the electron-phonon
coupling. Our theory explains why this peak appears only in the spectra with
$E_{2g}$ symmetry and onl... | cond-mat_supr-con |
Stripe Disordering Transition: We have recently begun Monte Carlo simulations of the dynamics of stripe
phases in the cuprates. A simple model of spinodal decomposition of the holes
allows us to incorporate Coulomb repulsion and coherency strains. We find
evidence for a possible stripe disordering transition, at a temp... | cond-mat_supr-con |
Correcting 100 years of misunderstanding: electric fields in
superconductors, hole superconductivity, and the Meissner effect: From the outset of superconductivity research it was assumed that no
electrostatic fields could exist inside superconductors, and this assumption
was incorporated into conventional London ele... | cond-mat_supr-con |
Long-range spin and charge accumulation in mesoscopic superconductors
with Zeeman splitting: We describe the far from equilibrium non-local transport in a diffusive
superconducting wire with a Zeeman splitting, taking into account the different
spin relaxation mechanisms. We demonstrate that due to the Zeeman splitti... | cond-mat_supr-con |
Suppression of superconductivity at nematic critical point in underdoped
cuprates: A nematic quantum critical point is anticipated to exist in the
superconducting dome of some high-temperature superconductors. The nematic
order competes with the superconducting order and hence reduces the
superconducting condensate a... | cond-mat_supr-con |
Orbital selective spin excitations and their impact on superconductivity
of LiFe1-xCoxAs: We use neutron scattering to study spin excitations in single crystals of
LiFe$_{0.88}$Co$_{0.12}$As, which is located near the boundary of the
superconducting phase of LiFe$_{1-x}$Co$_{x}$As and exhibits non-Fermi-liquid
behavi... | cond-mat_supr-con |
Critical Temperature Enhancement of Topological Superconductors: A
Dynamical Mean Field Study: We show that a critical temperature Tc for spin-singlet two-dimensional
superconductivity is enhanced by a cooperation between the Zeeman magnetic
field and the Rashba spin-orbit coupling, where a superconductivity becomes
... | cond-mat_supr-con |
Tunnel and thermal c-axis transport in BSCCO in the normal and pseudogap
state: We consider the problem of c-axis transport in double-layered cuprates, in
particular with reference to Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8+\delta}$
compounds. We exploit the effect of the two barriers on the thermal and tunnel
transport. The... | cond-mat_supr-con |
Nuclear ferromagnetism induced Fulde-Ferell-Larkin-Ovchinnikov state: We present a theoretical study of the influence of the nuclear ferromagnetism
on superconductivity in the presence of the electron-nuclear spin interaction.
It is demonstrated that in some metals, e.g. Rh, W, the BCS condensate imbedded
in a matrix o... | cond-mat_supr-con |
Fermiological Interpretation of Superconductivity/Non-superconductivity
of FeTe_{1-x}Se_{x} Thin Crystal Determined by Quantum Oscillation
Measurement: We have successfully observed quantum oscillation (QO) for FeTe_{1-x}Se_{x}.
QO measurements were performed using non-superconducting and superconducting
thin cryst... | cond-mat_supr-con |
Accurate Measurements of the Intrinsic Surface Impedance of Thin YBCO
Films Using a Modified Two-tone Resonator Method: We propose a modified two-tone method that could be used for sensitive
measurements of the intrinsic microwave surface impedance (Zs) of thin
superconductor films and the tand of a low-loss dielectr... | cond-mat_supr-con |
Carrier relaxation dynamics in intra-gap states: the case of the
superconductor Y Ba_2 Cu_3O_7-delta and the charge-density-wave semiconductor
K_0.3MoO_3: The unusual slow carrier relaxation dynamics - observed in femtosecond
pump-probe experiments on high-temperature superconductors and recently also in
a charge-d... | cond-mat_supr-con |
Possible origin of the pseudogap end point in the high-T$_{c}$ cuprates: Recent experiments find that the pseudogap phase of the high-T$_{c}$ cuprates
ends suddenly at an electron doping $x^{*}$ when the Fermi surface change its
shape from hole-like to electron-like. In this short note, we argue that the
antiferromagne... | cond-mat_supr-con |
Type-II Ising Pairing in Few-Layer Stanene: Spin-orbit coupling has proven indispensable in realizing topological
materials and more recently Ising pairing in two-dimensional superconductors.
This pairing mechanism relies on inversion symmetry breaking and sustains
anomalously large in-plane polarizing magnetic fields ... | cond-mat_supr-con |
Reentrant topological transitions with Majorana end states in 1D
superconductors by lattice modulation: The possibility to observe and manipulate Majorana fermions as end states of
one-dimensional topological superconductors has been actively discussed
recently. In a quantum wire with strong spin-orbit coupling place... | cond-mat_supr-con |
Charge-4e supercurrent in a two-dimensional InAs-Al
superconductor-semiconductor heterostructure: Superconducting qubits with intrinsic noise protection offer a promising
approach to improve the coherence of quantum information. Crucial to such
protected qubits is the encoding of the logical quantum states into
wavef... | cond-mat_supr-con |
Quantum anomalous vortex and Majorana zero mode in iron-based
superconductor Fe(Te,Se): In topological insulators doped with magnetic ions, spin-orbit coupling and
ferromagnetism give rise to the quantum anomalous Hall effect. Here we show
that in s-wave superconductors with strong spin-orbit coupling, magnetic
impur... | cond-mat_supr-con |
Superconductivity in the orthorhombic phase of thermoelectric
CsPbxBi4-xTe6 with 0.3=<x=<1.0: Experimental measurements clearly reveal the presence of bulk
superconductivity in the CsPbxBi4-xTe6 (0.3=<x=<1.0) materials, i.e. the first
member of the thermoelectric series of Cs[PbmBi3Te5+m], these materials have
the la... | cond-mat_supr-con |
Anomalous Josephson effect in p-wave dirty junctions: The Josephson effect in p-wave superconductor / diffusive normal metal /
p-wave superconductor junctions is studied theoretically. Amplitudes of
Josephson currents are several orders of magnitude larger than those in s-wave
junctions. Current-phase (J-\phi) relation... | cond-mat_supr-con |
Vortex configurations and metastability in mesoscopic superconductors: The vortex dynamics in mesoscopic superconducting cylinders with rectangular
cross section under an axially applied magnetic field is investigated in the
multivortex London regime. The rectangles considered range from a square up to
an infinite slab... | cond-mat_supr-con |
Proximity effect induced intriguing superconductivity in van der Waals
heterostructure of magnetic topological insulator and conventional
superconductor: Nontrivial topological superconductivity has received enormous research
attentions due to its potential for diverse applications in topological quantum
computing.... | cond-mat_supr-con |
Hole Localization in Underdoped Superconducting Cuprates Near 1/8th
Doping: Measurements of thermal conductivity versus temperature over a broad range of
doping in YBa$_2$Cu$_3$O$_{6+x}$ and HgBa$_2$Ca$_{n-1}$Cu$_n$O$_{2n+2+\delta}$
($n$=1,2,3) suggest that small domains of localized holes develop for hole
concentrat... | cond-mat_supr-con |
Shapiro Step on the rc-Branch in the IV-characteristic of a Josephson
Junction with an LC-shunting: The effect of external radiation on the phase dynamics of Josephson junctions
shunted by an LC circuit is examined. It is shown that additional resonant
circuit (rc) branches appear in the current voltage characteristi... | cond-mat_supr-con |
Nonequilibrium Josephson effect in mesoscopic ballistic multiterminal
SNS junctions: We present a detailed study of nonequilibrium Josephson currents and
conductance in ballistic multiterminal SNS-devices. Nonequilibrium is created
by means of quasiparticle injection from a normal reservoir connected to the
normal pa... | cond-mat_supr-con |
Magnetic Exciton Mediated Superconductivity in the Hidden-Order Phase of
URu2Si2: We propose the magnetic exciton mediated superconductivity occurring in the
enigmatic hidden-order phase of URu2Si2. The characteristic of the massive
collective excitation observed only in the hidden-order phase is well
reproduced by t... | cond-mat_supr-con |
Direct penetration of spin-triplet superconductivity into a ferromagnet
in Au/SrRuO3/Sr2RuO4 junctions: Efforts have been ongoing to establish superconducting spintronics utilizing
ferromagnet/superconductor heterostructures1. Previously reported devices are
based on spin-singlet superconductors (SSCs), where the spi... | cond-mat_supr-con |
Improved superconducting properties in nanocrystalline bulk MgB_2: Highly dense nanocrystalline MgB_2 bulk superconductors with distinctly
improved pinning were prepared by mechanical alloying of Mg and B powders and
hot compaction at ambient temperatures. The nanocrystalline samples reveal high
critical current densit... | cond-mat_supr-con |
Alignment of Carbon Nanotube Additives for Improved Performance of
Magnesium Diboride Superconductors: The rapid progress on MgB2 superconductor since its discovery[1] has made
this material a strong competitor to low and high temperature superconductors
(HTS) for applications with a great potential to catch the nich... | cond-mat_supr-con |
d-wave superconductivity and its coexistence with antiferromagnetism in
t-J-U model: Statistically consistent Gutzwiller approach: We discuss the coexistence of antiferromagnetism and d-wave superconductivity
within the so-called statistically-consistent Gutzwiller approximation (SGA)
applied to the t-J-U model. In t... | cond-mat_supr-con |
Magnetization-dependent $T_c$ shift in F/S/F trilayers with a strong
ferromagnet: We have measured the superconducting transition temperature $T_c$ of Ni/Nb/Ni
trilayers when the magnetizations of the two outer Ni layers are parallel (P)
and antiparallel (AP). The largest difference in $T_c$ occurs when the Nb
thickn... | cond-mat_supr-con |
Structural Evolution of One-dimensional Spin Ladder Compounds
Sr14-xCaxCu24O41 with Ca doping and Related Hole Redistribution Evidence: Incommensurate crystal structures of spin ladder series Sr14-xCaxCu24O41
(x=3, 7, 11, 12.2) were characterized by powder neutron scattering method and
refined using the superspace gr... | cond-mat_supr-con |
A chemist's view of chemical bonding in the mechanism of high
temperature superconductivity: Through a 2-dimensionnal tight-binding crystal orbital approach and a (CuO2)2
square unit cell of parameter a, we show that a Cu2+/O2- -> Cu+/O- charge
transfer is likely to occur at the M($\pi/a$, $\pi/a$) point of the Brill... | cond-mat_supr-con |
Theoretical explanation of electric field-induced superconductive
critical temperature shifts in Indium thin films: We calculate the effect of a static electric field on the superconductive
critical temperature of Indium thin films in the framework of proximity effect
Eliashberg theory, in order to explain 60 years o... | cond-mat_supr-con |
Magnetic field effect on Fe-induced short-range magnetic correlation and
electrical conductivity in
Bi$_{1.75}$Pb$_{0.35}$Sr$_{1.90}$Cu$_{0.91}$Fe$_{0.09}$O$_{6+y}$: We report electrical resistivity measurements and neutron diffraction studies
under magnetic fields of
Bi$_{1.75}$Pb$_{0.35}$Sr$_{1.90}$Cu$_{0.91}$Fe$... | cond-mat_supr-con |
Electron Phonon Interaction and Strong Correlations in High-Temperature
Superconductors: One can not avoid unavoidable: The important role of the electron-phonon interaction (EPI) in explaining the
properties of the normal state and pairing mechanism in high-T$_{c}$
superconductors (HTSC) is discussed. A number of ex... | cond-mat_supr-con |
Magic Doping Fractions in High-Temperature Superconductors: We report hole-doping dependence of the in-plane resistivity \rho_{ab} in a
cuprate superconductor La_{2-x}Sr_{x}CuO_{4}, carefully examined using a series
of high-quality single crystals. Our detailed measurements find a tendency
towards charge ordering at pa... | cond-mat_supr-con |
Three-dimensional energy gap and origin of charge-density wave in kagome
superconductor KV3Sb5: Kagome lattices offer a fertile ground to explore exotic quantum phenomena
associated with electron correlation and band topology. The recent discovery of
superconductivity coexisting with charge-density wave (CDW) in the ... | cond-mat_supr-con |
Depth profile of London length induced by nonuniform scattering rate
maximizing breakdown magnetic field in type II superconductors: The breakdown magnetic field is the key parameter which determines the
performance of superconducting radio-frequency cavities. This is the maximum
field up to which the Meissner state ... | cond-mat_supr-con |
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