Unifying semiclassics and quantum perturbation theory at nonlinear order
Nonlinear electrical response permits a unique window into effects of band structure
geometry. It can be calculated either starting from a Boltzmann approach for small …
geometry. It can be calculated either starting from a Boltzmann approach for small …
Light-induced electronic polarization in antiferromagnetic Cr2O3
In a solid, the electronic subsystem can exhibit incipient order with lower point group
symmetry than the crystal lattice. Ultrafast external fields that couple exclusively to electronic …
symmetry than the crystal lattice. Ultrafast external fields that couple exclusively to electronic …
Fermi-Dirac staircase occupation of Floquet bands and current rectification inside the optical gap of metals: An exact approach
We consider a model of a Bloch band subjected to an oscillating electric field and coupled to
a featureless fermionic heat bath, which can be solved exactly. We demonstrate rigorously …
a featureless fermionic heat bath, which can be solved exactly. We demonstrate rigorously …
Intrinsic Fermi-surface contribution to the bulk photovoltaic effect
We study the Fermi surface contribution to the nonlinear DC photocurrent at quadratic order
in a spatially uniform optical field in the ultraclean limit. In addition to shift and injection …
in a spatially uniform optical field in the ultraclean limit. In addition to shift and injection …