Derives general analytic expression for magnetic resonances in photogalvanic shift current of ideal Weyl nodes and solves Boltzmann equation exactly within semiclassical limits.
Nonlinear Hall effect in topological Dirac semimetals in parallel magnetic field
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abstract
We compute the second-harmonic response of two-dimensional topological Dirac semimetals subjected to an external in-plane magnetic field. The quantum kinetic equation for the Wigner distribution function is derived and then solved to evaluate the second-order electric-field contributions to the current density. Both the Berry curvature dipole and the field-induced terms in the current are analyzed across a broad range of model parameters. We propose that our theory can be tested experimentally by measuring the dependence of the anomalous Hall resistivity on the in-plane magnetic field in the surface states of the topological insulator SnTe, in WTe$_2$ and WSe$_2$ monolayers, as well as in the Kondo lattice material Ce$_3$Bi$_4$Pd$_3$ at very low temperatures.
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Strong photogalvanic effect in Weyl materials due to magnetic resonances
Derives general analytic expression for magnetic resonances in photogalvanic shift current of ideal Weyl nodes and solves Boltzmann equation exactly within semiclassical limits.