Superconducting Peierls instability gaps its own edge states
Dispersing Andreev crossings at ±k_c soften a pairing mode at 2k_c; its condensation writes a PDW along the edge.
cond-mat.supr-con
Superconductivity
Superconductivity: theory, models, experiment. Superflow in helium
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vdW diode reaches 30% efficiency and XNOR logic
Magnetic proximity in a van der Waals stack creates a non-reciprocal supercurrent that flips with magnetization, enabling a…
· “Junction-free polarity-tunable superconducting diode effect enables XNOR logic operation”
CMP yields >90% high-quality Josephson junctions at wafer scale
New Nb/Al-AlOx/Nb process uses chemical–mechanical polishing to replace lift-off, delivering uniform cross-type junctions down to 1 μm.
Screening length unchanged in a superconductor
Force and spectroscopy measurements rule out a hundred-fold change predicted by an alternative electrodynamic theory.
· “Thomas-Fermi screening of electrostatic fields in a type-I superconductor”
Simulations undo magnetic-field blur in photoemission spectra
Bent electron paths no longer blur momentum maps: Bi2Se3 bands recover zero-field sharpness up to 10 mT.
· “High-resolution angle-resolved photoemission spectroscopy with tunable magnetic field”
Kondo wave theory matches stripe patterns in UTe2 and TaS2
A (0,π) stripe phase yields unit-cell-doubling and predicted conductivity anisotropy, consistent with STM data.
3D constrictions double superconductor critical current
Curved geometry suppresses current crowding and unlocks a superconducting diode effect with up to 10% efficiency.
· “Geometry-induced current decrowding in superconducting 3D constrictions”
Instantaneous eigenbasis tames strong-drive parametric gates
New theory matches exact simulations where conventional idle-frame models fail, enabling faster gate design.
· “Instantaneous-Frame Theory of Strongly Driven Parametric Gates”
Phase-slip barrier asymmetry tied to diode efficiency without free parameters
Theory unifies magnetochiral anisotropy of thermal phase slips with the superconducting diode effect in a single numerical ratio.
· “Magnetochiral anisotropy of thermally activated phase slips in noncentrosymmetric superconductors”
Odd N isolates every band
Middle band carries N(N−1) Chern number while outer bands flatten, pointing toward fractional Chern states.
Nodal superconductivity in stoichiometric FeTe
Power-law penetration depth and V-shaped density of states indicate gap nodes, challenging the trend toward isotropic gaps in Fe(Se,Te).
· “Signatures of nodal superconductivity in stoichiometric FeTe”
RIXS finds even-order phonon cascade in cuprate insulator
Selective one-, two-, and four-phonon peaks of the Cu-O bond-stretching mode in La2CuO4 point to anomalous electron-lattice coupling…
· “Selective coupling of high-order phonons in La2-xSrxCuO4”
Gap, not chemical potential, sets quark-superconductor Meissner mass
Landau-level quantum geometry puts the pairing gap on the Meissner scale and offers a magnetar QPO signature.
· “Quantum-Geometric Meissner Effect in Magnetized Color Superconductors”
Square-hollow adatoms dodge flat-band coupling
A symmetry-selective interference determines whether magnetic bound states remain atomic or hybridize with the host superconductor.
Doping drives topological superconductor transition in misfit layers
At x=0.4, NbSe2 switches from multiband s-wave to an A1 triplet state with orientation-selective edge modes
· “Doping-controlled topological superconducting transition in misfit layer compounds”
Nickelate films host a nearly isotropic vortex solid
Melting-field anisotropy falling toward 1 at low T points to the 3d_z² γ band sharing superfluid weight.
· “Nearly Isotropic Vortex Solid in mathbf{(La,Pr)₃Ni₂O₇} Thin Films”
Triplet chirality locked to parent singlet in NbSe2
Self-consistent BdG calculations reveal that field-induced triplet pairing is symmetry-selected by the parent condensate.
· “Symmetry-selective field-induced triplet superconductivity in Ising-superconductor monolayer NbSe₂”
Bulk moiré crystal superconducts at 2.5 K
Transport, magnetic, and heat-capacity measurements confirm Tc in a crystal grown with intrinsic lattice mismatch.
· “Discovery of Superconductivity in a Bulk Moire Superlattice Material”
150 K: spin and charge waves intertwine in La4Ni3O10
A nuclear-quadrupole probe finds the two density waves travel together, unlike bilayer La3Ni2O7.
· “¹³⁹La nuclear quadrupole resonance studies of pressurized La₄Ni₃O₁₀”
This paper shows that a simple macroscopic London equation with a position-dependent…
The macroscopic and microscopic theories agree on field profiles for any impurity distribution, and a sharp surface-localized impurity…
GL method matches vortex scales far below T_c
A gradient-only expansion with exact order parameters matches full vortex simulations at a fraction of the cost.
Strange metal persists across wide composition range in FeSe1-xTex
Pure nematic quantum criticality plus disorder yields extended T-linear resistivity far beyond the QCP
· “Extended strange metal regime in a pure nematic quantum critical superconductor”
Non-symmorphic momentum symmetry creates exact pair density wave
A bilayer model with alternating hopping shows that finite-momentum pairing can be the leading weak-coupling instability, without…
· “Pair density wave order from non-symmorphic momentum symmetry”
Critical flavor number drops to ~1.5 in 3D gauge theory
FRG analysis finds charged fixed points at much lower N than epsilon expansion predicts, bringing superconductors closer to a continuous…
· “Global Fixed Point Potentials in the Abelian Higgs Model with N flavors”
P-wave magnetic disorder twists polar phase of 3He into chiral state
Berry curvature of the solid 3He magnetic layer generates a spin-orbit interaction that destabilizes the polar phase and stabilizes the…
· “On the Stability of the Polar Phase of Superfluid 3He in Nematic Aerogels”
Strain decides which way aluminum grows on a magnetic semiconductor
Strain sets Al grain size and Tc; a critical-field drop below 0.5 K hints at magnetic coupling.
This paper constructs explicit many-body wavefunctions for anyon superconductors
A hierarchy-wavefunction framework yields explicit wavefunctions for several anyon superconductors, establishing off-diagonal long-range…
BCS variational energy is exact in the thermodynamic limit
In a reduced superconductor model, the true many-fermion ground-state energy matches the BCS minimum up to a constant error.
· “A simple derivation of the zero-temperature BCS functional from the reduced BCS Hamiltonian”
Six chiral Majorana modes predicted in PtBi2 slabs
Thickness and Zeeman field tune betwen trivial and topological supeconducting phases in a model of the Weyl semimetal.
· “Tunable Chern superconductivity of PtBi₂ in slab geometry”
Flux noise caps fixed-frequency qubit lifetimes at Q ≈ 10^8–10^10
Even loopless transmons lose energy through the electric field that Faraday's law ties to magnetic noise.
· “Flux noise without flux tunability in superconducting qubits”
A warm magnetometer catches supercurrents at the moment they vanish
Field-cooled YBCO and REBCO samples reveal themselves by an abrupt magnetic collapse, readable from centimeters away.
Layer-thickness ratio sets the cuprate superconducting dome
Chemical potential, density of states, screening, and orbital polarization all peak where Tc peaks.
Anharmonicity cuts YScH8 stability to 84 GPa
Quantum ionic fluctuations resolve a 20 K discrepancy between harmonic theory and the measured 113 K transition.
Altermagnetic superconductor turns paramagnetic along one axis
An out-of-plane field makes one stiffness component negative while the other stays positive — a gapless-state signature
· “Anomalous Superfluid Response in Altermagnetic Superconductors”
High packet norm does not ensure Majorana parity memory
BdG calculations show a vortex-core packet retains >98% but spectral weight varies sharply with distance, producing slow, dephased, or…
Interaction corrections to Andreev states scale as L G_Q Δ
General convolution formulas link impedance to state-resolved admittances, predicting a current jump and a measurable negative interaction…
· “Interaction effects on Andreev states from an electromagnetic environment”
Bigger 2D superconductor, weaker field for its first vortex
The lower critical field keeps dropping with sample size — no intrinsic value survives in two dimensions.
· “Singular Weak-Field Thermodynamics of 2D Superconductors”
Six metals, one quantum well: buried parameters stay intact
New shunt-corrected Dingle analysis extracts density, mass, and lifetime of InAs well under Al, Sn, V, Nb, Ta, and Re.
· “Understanding the superconducting proximity effect in semiconductors through quantum oscillations”
Field-induced triplets create a strong
Zeeman-driven s+if pairing in Ising monolayers generates an intrinsic diode with efficiency set by spin-orbit rigidity rather than Fermi…
· “Superconducting diode effect from field-induced s+if pairing in Ising superconductors”
Linear superfluid density points to nodal gap in kagome superconductor
Noninvasive microwave measurements on CsV3Sb5 flakes reveal low-energy excitations consistent with unconventional pairing.
· “Resolving unconventional gap structure in kagome superconductors with hybrid microwave circuits”
Flux memory cells bias qubits for 20 hours with zero power
Three superconducting designs store persistent currents on chip, turning off room-temperature supplies and simplifying quantum processor…
Three-way pressure competition explains nickelate superconductivity dome
Kinetic energy, optimal coupling, and self-doping tune pairing from 16 K up to 74.5 K and back down under megabar compression.
Sm nickelate trilayer resists superconductivity to 80 GPa
Severely bent Ni-O-Ni bonds (152°) prevent the structural change needed for superconductivity.
Heavy Sr doping kills superconductivity in a straight-bond bilayer nickelate
Tetragonal structure alone is not enough: the Ni-3d_z2 orbital must be close to half-filling for pairing to work.
· “Heavily Sr-Doped La₂SrNi₂O_{7-{δ}} as a Tetragonal Ruddlesden-Popper Phase at Ambient Pressure”
Bond-valence sums explain two-gap temperatures in four-layer cuprate
Inner and outer planes act as independent superconductors, with Tc set by local atomic structure, not global doping.
A magnetic adatom on a flat band superconductor induces a Yu-Shiba-Rusinov bound state
For a flat band superconductor, the asymptotic localization length of a YSR bound state is impurity-independent, while its quadratic spread…
· “Impurity-dependent quantum geometry in 2D flat band superconductors”
Non-magnetic dynamical impurities create subgap bound states
Closed-form energy formula and predicted spectroscopic signatures in conventional superconductors with localized vibrons.
Green-function zeros encode how correlated insulators order
Their dispersion obeys fixed laws: spin correlations on the Mott side, a -8/7 defect rule on the charge side.
· “Green-function Zeros Encode Competing Mott and Charge-ordering Scales”
Microwaves create steady magnetization in a superconductor
First observation of the inverse Faraday effect in YBCO at microwave frequencies, with conversion 1.75 T/(W cm⁻²)
· “Microwave-Induced Optomagnetism in High-Temperature Superconductors”
Quadratic edge replaces linear absorption in superconducting nanowires
Localization leaves the BCS spectrum intact while creating a Mott-like quadratic onset, testable with microwaves.
· “Quadratic pair-breaking absorption edge from Anderson localization in a superconducting wire”
Two simple chemical descriptors single out high-Tc superconductors
Large electronegativity contrast plus mid-range valence counts locates cuprates, iron-based, nickelates.
Tellurium polyhydride superconducts at 91 K
Tellurium is the second chalcogen hydride to show superconductivity, and the phase is hexagonal TeH4.
· “Superconductivity of Tellurium Polyhydride with Tc above 90K”
Twist toggles superconductor between diamagnetic and paramagnetic
Momentum-space node alignment at a twisted altermagnet interface flips the sign of the superfluid density without external fields
· “Twist-Tunable Paramagnetic Superconductivity in d-wave Altermagnet/Superconductor Heterostructures”
Optimal impurity peaks superheating field in Nb3Sn
Eliashberg theory predicts a 6% higher metastable field limit than BCS at moderate disorder, relevant for cavity applications
· “Superheating Field of Extreme Type-II Superconductors Calculated from the Eliashberg Theory”
Ballistic-to-localized dynamics signals Josephson phase transition
Real-frequency analysis reveals a strict insulator-to-superconductor transition, overturning the diffusive picture.
· “Ballistic-to-Localized Dynamics as Signature of Quantum Phase Transition in Josephson Junction”
Excitonic CDW and BCS pairing compete in a single Hamiltonian
A minimal mean-field calculation on a triangular lattice reproduces the commensurate-to-incommensurate charge order and superconducting…
Josephson phase alone flips where Andreev states accumulate
Sweeping the phase moves the same band's accumulation from the right end to the left end while reservoir and probes stay fixed.
· “Josephson-Phase Reversal of Non-Bloch Andreev Propagation”
Ferromagnetic history tunes a 2D superconductor in LAO-STO membranes
Side-contact nickel electrodes preserve superconductivity; an effective field model extracts the contact magnetization from the switching…
· “Magnetic contacts on freestanding superconducting LaAlO₃/SrTiO₃ micromembranes”
Off-site pairing twists surface spectra of wallpaper fermions
The paper demonstrates that introducing off-site nearest-neighbor density-density interactions (V'_∥ and V'_⊥) can stabilize B2u and Eu…
Parametric amplifier hits 15 dB gain with Nb nanobridge Kerr oscillator
A DC SQUID with Ne-FIB weak links acts as a Kerr nonlinear resonator, delivering controllable amplification at 15 mK.
· “Parametric amplification in a Kerr Oscillator based on Ne FIB Nanobridges”
A single material reveals two superconducting faces by thinning
Exfoliating FeSe suppresses nematic order and flips its pairing symmetry from s-wave to d-wave, a clean knob for quantum order engineering.
· “Controlling Intertwined Electronic Orders in FeSe with Exfoliation”
Superfluid electromechanics reveals vortex avalanches inside a nanochannel
By coupling a 4th-sound resonator to a superconducting LC tank, researchers achieve optomechanical-like control and resolve sudden vortex…
· “Dynamical backaction in nanoscale superfluid electromechanics”
Granular aluminum resonators defy standard theory with positive frequency shift
An initial frequency increase with temperature, opposite to Mattis-Bardeen predictions, points to gap disorder but leaves loss unexplained.
· “Anomalous Frequency Shift in Low-Loss Superconducting Granular Aluminum Resonators”
TPDW may dominate in kagome superconductors
Multiple experiments point to a topological pair density wave as the ground state in AV3Sb5, not uniform pairing.
· “Topological pair density waves in kagome superconductors”
Hole doping flips pairing symmetry in La₃Ni₂O₇
s±-wave gives way to dxy-wave as holes are added, while electron doping preserves s± even when the γ pocket vanishes.
· “Doping-driven evolution of pairing symmetry in pressurized La₃Ni₂O₇”
Vortex at twin boundary splits into fractional pair
Weak s±id pairing appears only in the vortex state, explaining STM images of FeSe.
· “Electronic state of vortices at twin boundaries in a nematic superconductor”
One system, two superconducting faces: s-wave bulk vs chiral interface
Bi-Ni review suggests conventional NiBi₃ and possibly topological Bi/Ni bilayers coexist, with the interface chemistry holding the key.
· “Superconductivity and Magnetism in Bi-Ni System: From Bulk to Heterostructures”
Impurity states pin chiral d+id order in kagome superconductor
STM spectroscopy rules out s-wave and s±, leaving only a time-reversal-breaking chiral state.
· “Direct Evidence of Unconventional Superconductivity in Doped Kagome system RV₃Sb₅”
Three-fluid model predicts anti-Q slope in SRF cavities
Separating bound and continuum quasiparticles reproduces the field-increasing Q in N-doped niobium.
· “A Three-Fluid Model of Dissipation at Surfaces in Superconducting Radiofrequency Cavities”
Vertex correction justifies normal-state subtraction in Dirac superconductors
Gauge invariance forces the ultraviolet regularization to the normal-state subtraction value, giving a microscopic foundation for an old…
3D films host 2D quantum Griffiths singularity
Thick ZrN_x films show divergent critical exponent and activated scaling, hallmarks of an infinite-randomness quantum critical point.
· “Two-dimensional quantum Griffith singularity in three-dimensional ZrN_x superconducting films”
Two orbitals, two magnetic states in a single nickelate
17O-NMR shows d3z2−r2 electrons form interlayer singlets while dx2−y2 electrons carry striped SDW order
Iron‑hydride powder shows signs of 295 K superconductivity
EPR spectra of Fe‑Se‑H reveal vortex signals that the authors interpret as a critical temperature above room temperature at ambient…
· “High-Temperature Superconductivity of the Fe-Se-H compound”
Occupation imbalance creates Josephson diode in symmetric junction
A symmetric double-dot junction with engineered dissipation achieves nonreciprocal supercurrent via a reservoir-controlled dark Andreev…
· “Occupation-Driven Josephson Diode in a Symmetric Junction”
Diamond sensor catches local heating missed by stage thermometer
Integrated boron-doped diamond antenna and thermometer enable accurate cryogenic magnetic imaging of superconductors.
Phase-transition sensor speeds up qubit readout 100×
A superconducting film integrated with an rf-SET amplifies charge signals, cutting measurement time from microseconds to under a…
· “A Superconducting Phase Transition Single-Electron Transistor”
A rotational sound barrier appears in quantum solvents
Theory predicts a dissipative wall where a rapidly spinning molecule resonantly sheds excitations into the surrounding superfluid.
· “Crossing the Rotational Sound Barrier in a Quantum Solvent”
Magneto-electric term makes phase soliton the ground state in two-band rings
A chiral Lifshitz invariant converts metastable topological textures into equilibrium states, detectable in current–flux curves.
· “Stabilization of Interband Phase Solitons in Two-Band Noncentrosymmetric Superconducting Rings”
One half-flux quantum forces perfect Cooper-pair splitting
A flux-tuned wire junction promises 100% crossed Andreev reflection, with a topological proof that the effect survives tuning.
Strain forces FeTe through three magnetic phases
DFT+DMFT and Heisenberg modeling trace a complete bicollinear→staggered n-mer→stripe evolution, with coherence peaking in the intermediate…
· “Strain-driven orbital-selective reconstruction and bicollinear-to-stripe evolution in FeTe”
