Within the semiclassical Boltzmann transport theory, the formula for Seebeck coefficient S is derived for an isotropic two-dimensional electron gas (2DEG) system that exhibits anomalous Hall effect (AHE) and anomalous Nernst effect (ANE) originating from Berry curvature on their bands. Deviation of S from the value S0 estimated neglecting Berry curvarture is computed for a special case of 2DEG with Zeeman and Rashba terms. The result shows that, under certain conditions the contribution of Berry curvature to Seebeck effect could be non-negligible. Further study is needed to clarify the effect of additional contributions from mechanisms of AHE and ANE other than pure Berry curvature.
@article{arxiv.1402.0535,
title = {Contribution of Berry Curvature to Thermoelectric Effects},
author = {Yo Pierre Mizuta and Fumiyuki Ishii},
journal= {arXiv preprint arXiv:1402.0535},
year = {2014}
}
Comments
Comments: 6 pages, SCES2013, accepted for publication in JPS Conf. Proc