222 papers
High-quality single-crystalline DyNiSb exhibits two distinct magnetic transitions and metallic conductivity, contrasting with previous polycrystalline reports, while displaying complex magnetotransport behavior including weak antilocalization and a field-induced Fermi surface reconstruction.
This paper establishes a unified spin space group framework that comprehensively classifies even- and odd-parity unconventional magnets into collinear, coplanar, and noncoplanar types, identifies distinct symmetry-driven mechanisms for each, and predicts new candidate materials to advance the understanding and design of these magnetic systems.
This paper introduces ETHER, an open-source Monte Carlo simulation package designed to efficiently investigate temperature-dependent magnetic properties, phase transitions, and critical behaviors in complex spin systems through its flexible network construction, user-defined interactions, and comprehensive visualization tools.
This study demonstrates that the projection-size dependence of DFT+U calculations can be alleviated by employing renormalized, projection-specific effective Coulomb interaction () values derived from constrained DFT, thereby ensuring consistent results for structural, electronic, and thermodynamic properties across different projection spaces.
The study reports the discovery of Cs3V9V9Te13, a novel intermetallic compound featuring a unique vanadium mosaic lattice that exhibits heavy-fermion behavior and a tunable density-wave transition, which can be suppressed via chemical pressure to reveal a quantum-disordered semiconducting state.
This study employs first-principles calculations to predict that Kagome-structured RCo5 permanent magnets, particularly CeCo5 and GdCo5, exhibit giant anomalous Hall and Nernst effects driven by Berry curvature hotspots near spin-orbit coupling-induced band gaps, positioning them as promising platforms for next-generation spintronic and thermoelectric applications.
High-resolution neutron scattering and DFT studies on LaSrMnO reveal that despite weak magnetoresistance, Jahn-Teller-active oxygen vibrations collapse above the Curie temperature due to giant electron-phonon coupling driving diffusive oxygen distortions, suggesting that the magnitude of magnetoresistance correlates with the rate of this diffusion rather than the strength of the coupling itself.
This study demonstrates that in the van der Waals magnet Fe5GeTe2, strong electronic correlations drive the formation of a flat band at the Fermi level, which in turn induces a charge order, establishing a paradigm where interaction-driven flat bands promote large-scale electronic ordering.
This paper presents a global method for constructing commensurate supercells in twisted and strained bilayer graphene, revealing that shear strain significantly enhances band narrowing and drives topological transitions, thereby establishing a tunable platform for flat-band and correlated phenomena beyond the magic angle.
This paper establishes a gauge-invariant framework for defining unique electron and hole exciton Berry phases via a projected position operator, enabling the numerical calculation of exciton polarization and the characterization of topologically distinct exciton bands, including shift excitons, through crystalline inversion and symmetries.
This paper presents a microscopic theory demonstrating that bending-induced inhomogeneous spin textures on curved magnetic surfaces can generate a Dzyaloshinskii-Moriya-type interaction between magnetic impurities mediated by itinerant electrons, even in the absence of spin-orbit coupling.
This study utilizes a custom-built cryogenic magneto-THz scattering-type scanning near-field optical microscopy platform to visualize the nanoscale evolution of colossal magnetoresistance in , revealing that magnetic-field-induced spin switching initiates as 1–2 nm isolated sites that coalesce into ~15 nm conducting regions during the transition from an antiferromagnetic insulator to a ferromagnetic metal.
This study reports the successful synthesis of bulk OsO2 single crystals that outperform commercial RuO2 nanopowder in oxygen evolution reaction efficiency and stability, challenging the universal applicability of nanoscaling by demonstrating that crystal integrity is a critical descriptor for robust electrocatalysis.
This paper proposes a theoretical framework for detecting magnon orbital moment transport in altermagnets via an electric polarization probe, demonstrating that the magnon's effective electric dipole moment generates a measurable transverse voltage suitable for low-dissipation orbitronic applications.
By synthesizing high-quality rutile OsO2 single crystals, researchers discovered that while the material is initially a paramagnetic metal, applying high pressure (44 GPa) induces a metal-insulator transition and drives a phase change into an altermagnetic state, demonstrating that external pressure can effectively tune its magnetic ground state.
This paper introduces and benchmarks two hybrid quantum-classical methods combining time-dependent Lanczos and matrix-product state approaches with the multi-trajectory Ehrenfest approximation to simulate electron-phonon systems, demonstrating that coupling strongly disordered interacting fermions to classical Einstein phonons induces delocalization and destabilizes many-body localization.
This paper introduces Quantum Krylov using Unitary Decomposition (QKUD), a time-evolution-free method that maps Hamiltonian powers to implementable unitaries via a tunable Hermitian transform to overcome basis collapse and ill-conditioning, thereby enabling robust and accurate quantum simulation of many-body systems.
This paper introduces a hybrid stochastic method that achieves exact tensor network contraction by sampling loop corrections to Belief Propagation via Markov chain Monte Carlo, thereby eliminating systematic errors on loopy graphs while providing unbiased estimates with controllable statistical error across all parameter regimes.
This paper reports the first realization of fractional topological phases, characterized by winding numbers and robust edge states, in a fully unitary, noninteracting single-coin split-step quantum walk on finite cyclic graphs, demonstrating how step-dependent protocols enable the engineering of flat bands and unconventional bulk-boundary correspondence in small-scale synthetic quantum systems.
Using a self-consistent renormalization group approach, this paper demonstrates that strong coupling to thermal bosons can robustly enhance a superconductor's critical temperature by balancing density fluctuations and boson-induced attraction, with potential applications in cold atomic systems and van der Waals heterostructures.