Negative transverse magnetoresistance due to negative off-diagonal mass in linear dispersion materials
Mesoscale and Nanoscale Physics
2023-03-14 v1
Abstract
This study calculated the magnetoresistance (MR) in the Dirac electron system, Dressellhaus-Kip-Kittel (DKK) model, and nodal-line semimetals based on the semiclassical Boltzmann theory, with particular focus on the detailed energy dispersion structure. The negative off-diagonal effective-mass was found to induce negative transverse MR owing to the energy dispersion effect. The impact of the off-diagonal mass was more prominent in case of a linear energy dispersion. Further, Dirac electron systems could realize negative MR even if the Fermi surface was perfectly spherical. The obtained negative MR in the DKK model may explain the long-standing mystery in p-type Si.
Keywords
Cite
@article{arxiv.2303.06887,
title = {Negative transverse magnetoresistance due to negative off-diagonal mass in linear dispersion materials},
author = {Yudai Awashima and Yuki Fuseya},
journal= {arXiv preprint arXiv:2303.06887},
year = {2023}
}