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.
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Semiclassical theory predicts that strong intervalley scattering induces sign reversal of longitudinal magneto-optical conductivity in the weak AC regime for untilted Weyl semimetals with orbital moment, suppressing the chiral anomaly, while tilt direction controls symmetry and sign of the response.
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Quantized orbital and spin Hall transport: interplay between $sp$-hybridization, altermagnetism and spin-orbit coupling
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.
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Semiclassical theory of frequency dependent linear magneto-optical transport in Weyl semimetals
Semiclassical theory predicts that strong intervalley scattering induces sign reversal of longitudinal magneto-optical conductivity in the weak AC regime for untilted Weyl semimetals with orbital moment, suppressing the chiral anomaly, while tilt direction controls symmetry and sign of the response.