In-plane linear magnetoconductivity serves as an alternative probe of valley polarization in graphene multilayers that remains finite when the anomalous Hall effect vanishes due to symmetry.
Xiao , author M.-C
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Altermagnets exhibit a resonant third-order intrinsic anomalous Hall effect from the Berry curvature quadrupole, serving as a quantum geometric transport fingerprint.
Establishes bound relations between electronic properties in magnetic crystals, including a new lower bound on susceptibility for Chern insulators and generalization of Chern bounds to three dimensions.
Twisted multilayers show interlayer electric multipole Hall effects from layer pseudospin textures, with tunable currents in trilayers via interlayer translation and additive interface contributions at large angles.
Simulations of a square-lattice spin model with bilinear and biquadratic interactions reveal successive field-driven transitions to single-Q, double-Q, and multiple inequivalent quadruple-Q states with distinct phase locking, amplitude distributions, and scalar spin chirality.
Derives distinct scaling laws N_c vs B_c for beating nodes in graphene quantum oscillations to distinguish pseudomagnetic fields (N_c ∝ B_c²), valley imbalance (N_c ∝ B_c), and energy splitting mechanisms.
Relativistic SOC corrections to the magnetic moment operator create an abnormal magnetic moment, render spin-orbital decomposition ambiguous, and require a new Kubo formula for the kinetic magnetoelectric effect that includes noncommuting position and partial-B operators.
In a 2D model Hamiltonian, orbital Hall conductivity quantizes when altermagnetism exceeds sp-hybridization while spin Hall quantizes when Rashba SOC is weaker, with both independent of the other coupling and arising from Fermi-surface Berry curvature.
In a 1D Su-Schrieffer-Heeger model augmented by exponentially decaying long-range interactions, increasing the interaction range triggers topological phase transitions even for weak coupling strengths.
Extending the Haldane model to the dice lattice induces flat-band topological transitions at φ^c = π/6 and 5π/6, with flux-dependent Chern numbers and quantized Hall plateaus.
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Extended Haldane Model in The Dice Lattice: Multiple Flat-Band-Induced topological Transitions Revealed
Extending the Haldane model to the dice lattice induces flat-band topological transitions at φ^c = π/6 and 5π/6, with flux-dependent Chern numbers and quantized Hall plateaus.