Nonlinear electrical conduction primarily mediated by an orbital texture is observed in chiral semiconductor Te. We determine the enantiospecific sign of the nonlinear conductance and identify anomalies in its carrier-density dependence. Our findings, combined with the Boltzmann equation, are attributed to a chiral orbital texture, namely a chiral distribution of the orbital magnetic moment in reciprocal space. This study underscores the efficacy of nonlinear transport measurements in probing orbital-related effects, whose differentiation from spin counterparts is often demanding in the linear response regime of electron transport.
@article{arxiv.2407.08998,
title = {Chiral orbital texture in nonlinear electrical conduction},
author = {Suguru Okumura and Ryutaro Tanaka and Daichi Hirobe},
journal= {arXiv preprint arXiv:2407.08998},
year = {2024}
}
Comments
15 pages, 10 figures, accepted for publication in Physical Review B