Quantum Kinetic Theory of Nonlinear Nernst Effect
- URL: http://arxiv.org/abs/2010.15340v2
- Date: Sat, 12 Dec 2020 01:17:26 GMT
- Title: Quantum Kinetic Theory of Nonlinear Nernst Effect
- Authors: Hongchao Li
- Abstract summary: We show the quantum kinetic theory for nonlinear Nernst effect and introduce a new type of Berry curvature dipole: thermoelectric Berry curvature dipole.
This new Berry curvature dipole will also induce the thermoelectric transport in nonlinear regime even in time-reversal invariant crystals.
- Score: 1.0965065178451106
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: For a long period of time, we have been seeking how Berry curvature influnces
the transport properties in materials breaking time-reversal symmetry. In
time-reversal symmetric material, there will be no thermoelectric current
induced by Berry curvature in linear regime. However, the nonlinear Hall
current can be shown in non-magnetic and non-centrosymmetric materials, where
Berry curvature dipole plays an important role. Most studies are developed from
semi-classical Boltzmann equation. Here we show the quantum kinetic theory for
nonlinear Nernst effect and introduce a new type of Berry curvature dipole:
thermoelectric Berry curvature dipole. This new Berry curvature dipole will
also induce the thermoelectric transport in nonlinear regime even in
time-reversal invariant crystals. We will also apply our theory to topological
crystalline insulator with tilted Dirac cone.
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