Cuprate Superconductors — Literature Tracker
Weekly update covering papers from the past two weeks from arXiv (cond-mat.supr-con, cond-mat.str-el), APS journals (PRL, PRB, PRX, PRX Quantum, Physical Review Research), Nature family, and Science/AAAS and various other journals.
The output is generated automatically from RSS feeds using python and Claude AI for assessing relevance and one line summaries. It may not be complete. It may also not be accurate.
25 papers
This study demonstrates that 3 MeV proton irradiation creates effective pinning centers in HgBa₂Ca₂Cu₃O₈₊δ (Hg-1223) cuprate single crystals, enhancing the critical current density by nearly five-fold at optimal dosing through a change in flux pinning mechanisms.
This theoretical study demonstrates that sliding charge-density waves act as intrinsic Floquet systems, providing an exact solution that explains the observed 1/I quantum oscillations in CDW insulators and revealing how spatial CDW periodicity converts to temporal periodicity in quantum transport.
This theoretical work demonstrates that quantum critical point fluctuations can explain the linear-in-B magnetoresistance characteristic of strange metals, complementing the known T-linear resistivity behavior observed in cuprate superconductors.
Using experimental techniques across multiple cuprate systems, the authors demonstrate that superconductivity unexpectedly enhances charge-density-wave phase coherence rather than simply competing with CDW order, revealing a more cooperative relationship between these two orders than previously understood.
This study uses first-principles calculations and variational Monte Carlo methods to investigate how topotactic hydrogen affects the electronic structure and superconducting properties of infinite-layer nickelate NdNiO₂, which is directly relevant to understanding cuprate-analog superconductivity mechanisms.
Using ARPES measurements on optimally-doped quadruple-layer cuprate (Cu,C)Ba₂Ca₃Cu₄O₁₁₊δ, the study reveals distinct electronic structures and superconducting gaps between inner and outer CuO₂ planes, providing insights into the layer-dependent physics that enables higher Tc in multilayer cuprate systems.
The authors propose that superconductivity in twisted WSe₂ bilayers is a "gossamer" chiral d+id pairing state arising from extended Hubbard model physics on a triangular lattice, where moderate Coulomb repulsion enables mobile doublon-hole pairs while antiferromagnetic superexchange stabilizes the superconducting phase.
Neutron scattering on La3Ni2O7 single crystals reveals bilayer antiferromagnetic order with stripe-type correlations and intense mid-energy spin excitations that are comparable in magnitude to cuprates despite having only 25% of the bandwidth, establishing a distinct magnetic framework for nickelate superconductors.
The authors develop a two-dimensional Yukawa-SYK model with spatially random fermion-boson coupling to provide a microscopic theory for incoherent metallic transport in unconventional superconductors including cuprates, deriving non-Boltzmann transport formulas and explaining violations of standard transport bounds like Mott-Ioffe-Regel.
Using resonant x-ray scattering and spectroscopy on bilayer nickelate La₂PrNi₂O₇ films, the authors show that superconductivity occurs in oxygen-stoichiometric regions without spin density wave order, while oxygen deficiency promotes SDW formation, proposing that superconductivity arises from an interlayer five-spin polaron state involving ligand holes at apical oxygens.
This theoretical work proposes a novel electron pairing mechanism for YBCO superconductors based on interfacial charge-induced adsorption modes involving valence-flexible oxygen ions, claiming to explain d-wave symmetry, pseudogap behavior, and predicting coherence lengths and gap values consistent with experimental STM measurements.
This theoretical study clarifies why midgap Andreev edge states in d-wave superconductors (relevant to cuprates) are more sensitive to surface roughness than in p-wave superconductors, showing that inter-mode scattering between two distinct MAES types causes the characteristic V-shaped density of states broadening observed in d-wave systems.
This theoretical work proposes that the crossover from T-quadratic resistivity in underdoped cuprates to T-linear resistivity in overdoped cuprates arises from impurity-scattering assisted umklapp processes involving spin excitations, with the pseudogap opening reducing antinodal spin excitation density and modifying the scattering strength.
This theoretical study uses the Rashba-Zeeman-Hubbard model to demonstrate that in d-wave superconductors near antiferromagnetic quantum criticality, electron correlations enable a novel superconducting diode effect mechanism where nonreciprocal supercurrents induce antiferromagnetic order that governs the critical current asymmetry.
This work demonstrates quantum speedup using quantum annealing to solve the one-dimensional Hubbard model, which is a foundational model for understanding strongly correlated electron systems including cuprate superconductors.
Using DMRG calculations on one-dimensional Kondo-Heisenberg models, the authors demonstrate evidence for an interior-gap pair-density-wave state where strong correlations dynamically generate additional low-energy structure and dominant PDW correlations, with momentum distribution functions showing characteristic interior-gap features particularly clear in the S=3/2 chain.
DFT+DMFT calculations on La₅Ni₃O₁₁ nickelate reveal orbital-selective Mott insulating behavior in single-layer Ni sites and strongly renormalized quasiparticle bands in bilayer sites, with magnetic correlations showing stripe patterns analogous to cuprate physics.
Using alkali-metal dosing with ARPES, the authors disentangle electron doping from oxygen reduction effects in electron-doped cuprates, finding that while additional electrons suppress antiferromagnetic Fermi surface reconstruction, the pseudogap persists, indicating that oxygen impurities significantly contribute to pseudogap formation.
This work develops efficient neural quantum state architectures (SCALE and ACE) for studying the Hubbard and t-J models on large lattices, achieving significant computational speedups and finding no energy difference between horizontal and vertical stripe states in the 1/8-doped Hubbard model on 32×32 systems.
This theoretical work establishes seven exact theorems for the Hubbard model on bipartite lattices in dimensions d>1 using full SU(2)×SU(2)×U(1)/Z₂² symmetry, providing new insights into the fundamental model that describes electronic correlations in cuprate superconductors and other strongly correlated materials.
The authors use ghost-Gutzwiller approximation to map the magnetic phase diagram of the half-filled Hubbard model on anisotropic triangular lattices, finding improved agreement with DMFT compared to standard Gutzwiller methods and establishing this as an efficient approach for studying frustrated magnetism relevant to cuprate physics.
This DMRG study of the 1D Hubbard model with spin-dependent linear potentials identifies three regimes of fermion pairing behavior as external forces compete with attractive interactions, directly relevant to understanding pairing mechanisms in strongly correlated systems like cuprates.