The size of Cooper pairs is given by the trace of their quantum geometric quadrupole moment, with Berry curvature entering via the pair wavefunction phase to impose a geometric lower bound alongside the quantum metric.
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The site basis excitation ansatz computes accurate one-magnon dispersions for the S=1 Heisenberg chain by constructing a small non-orthogonal basis from a single-site-like diagonalization and solving small matrices for each momentum.
A new equivariant space group framework constructs magnetic Hamiltonians with explicit dependence on magnetic order orientation n, enabling analysis of dynamics-driven topological pumping and ab-initio modeling of real materials.
First-principles and tight-binding calculations on three FI/TI van der Waals stacks predict a magnetization-induced gap that supports half-quantized anomalous Hall conductance of e²/2h.
Nonlinear thermal and thermoelectric responses are shown to encode quantum geometry and satisfy relations parallel to the Wiedemann-Franz and Mott laws in systems with broken symmetries.
Ta₂CS₂ MXene hosts valley-orbital and orbital-layer couplings that, together with spin-orbit interaction and electric polarization, yield valley-dependent orbital moments and layer-dependent spin splitting, which appear in orbital and spin Hall effects.
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Quantum Geometric Quadrupole of Cooper Pairs
The size of Cooper pairs is given by the trace of their quantum geometric quadrupole moment, with Berry curvature entering via the pair wavefunction phase to impose a geometric lower bound alongside the quantum metric.
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Site Basis Excitation Ansatz for Matrix Product States
The site basis excitation ansatz computes accurate one-magnon dispersions for the S=1 Heisenberg chain by constructing a small non-orthogonal basis from a single-site-like diagonalization and solving small matrices for each momentum.
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Equivariant Space Group and Hamiltonian for Collinear Magnetic Systems
A new equivariant space group framework constructs magnetic Hamiltonians with explicit dependence on magnetic order orientation n, enabling analysis of dynamics-driven topological pumping and ab-initio modeling of real materials.
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Half-quantized anomalous Hall conductance in topological insulator/ferromagnet van der Waals heterostructures
First-principles and tight-binding calculations on three FI/TI van der Waals stacks predict a magnetization-induced gap that supports half-quantized anomalous Hall conductance of e²/2h.
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Nonlinear thermal and thermoelectric transport from quantum geometry
Nonlinear thermal and thermoelectric responses are shown to encode quantum geometry and satisfy relations parallel to the Wiedemann-Franz and Mott laws in systems with broken symmetries.
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Interplay of Valley, Orbital, Spin, and Layer Degrees of Freedom in Ta$_2$CS$_2$ MXene
Ta₂CS₂ MXene hosts valley-orbital and orbital-layer couplings that, together with spin-orbit interaction and electric polarization, yield valley-dependent orbital moments and layer-dependent spin splitting, which appear in orbital and spin Hall effects.