cond-mat.supr-con

Beyond Variational Bias: Resolving Intertwined Orders in the Hubbard Model

The paper demonstrates that different variational wave function architectures can yield nearly identical energies while predicting conflicting physical states, concluding that systematic improvements in accuracy and correlation tracking are essential to resolve competing orders in the Hubbard model.

Non-volatile superconducting tunnelling magnetoresistance memory enabled by exchange-field gap engineering

This paper demonstrates a scalable, non-volatile superconducting memory device that uses exchange-field gap engineering in a vertical spin-valve architecture to achieve low-power, high-efficiency magnetoresistance for cryogenic and quantum computing applications.

Theoretical prediction of strong-coupling superconductivity in a hypothetical NaAlH3 phase at ambient pressure

This paper uses first-principles calculations to theoretically predict that a hypothetical cubic phase of $\text{NaAlH}_3$ could exhibit strong-coupling superconductivity with a critical temperature of up to 73.7 K at ambient pressure.

Corner Majorana states in semi-Dirac

This paper proposes a theoretical framework for realizing robust, tunable Majorana bound states at the corners of a two-dimensional semi-Dirac system by inducing effective p-wave pairing in its anisotropic edge states through the interplay of Rashba spin-orbit coupling, a Zeeman field, and s-wave superconductivity.

Pathways from a chiral superconductor to a composite Fermi liquid

Motivated by recent experiments on rhombohedral graphene, this paper demonstrates that the evolution between a chiral superconductor and a composite Fermi liquid generally proceeds through an intermediate stable Landau Fermi liquid phase for weak attractive interactions, rather than via a direct continuous transition.

Strain-induced structural change and nearly-commensurate diffuse scattering in the model high-temperature superconductor HgBa$_2$CuO$_{4+δ}$

This study reveals that compressive strain along the $a$-axis in underdoped HgBa$_2$CuO$_{4+\delta}$ induces a significant elongation of the Cu-O bond and generates a strain-driven, nearly commensurate two-dimensional charge correlation with a wave vector near (0.5, 0, 0) that is independent of superconductivity and resembles resonating valence bond predictions.

Healing of topological defects while crystallizing nanocrystals

$\eta$-pairing in a two-band model of spinless fermions

This paper proposes that a two-band model of spinless fermions with two-particle hybridization can generate effective attractive interactions leading to $\eta$-pairing and $p$-wave superconductivity, offering a potential explanation for high-temperature superconductivity observed in hydrogen-rich materials under high pressure.

Intertwined charge density wave, tunable anti-dome superconductivity, and topological states in kagome metal VSn

This study predicts the novel 1:1 kagome metal VSn as an intrinsic charge density wave material that, under pressure or doping, exhibits a rare anti-dome-shaped superconductivity intertwined with topological states and a reentrant CDW phase, offering a promising platform for exploring multi-phase quantum correlations and designing topological superconducting metals.

Controlled Manipulation of Intermediate State in a Type-I Superconductor

Using low-temperature magnetic force microscopy on high-purity tantalum, this study achieves direct imaging and active manipulation of flux structures in type-I superconductors, revealing topological hysteresis and demonstrating reversible dynamic reconfigurations like stripe-grid transitions under AC excitation.