Electrical magnetochiral anisotropy in Rashba superconductors
Abstract
We theoretically investigate the role of higher-order Lifshitz invariants in nonreciprocal charge transport in two-dimensional noncentrosymmetric superconductors with Rashba spin-orbit coupling. In the superconducting state, these symmetry-allowed terms give rise to critical-current nonreciprocity, while in the normal state near the superconducting transition they generate a pronounced magnetochiral anisotropy. Using symmetry-constrained group-theoretical methods, we systematically construct the allowed Lifshitz invariants and derive the corresponding vector structure of the nonreciprocal current. To describe nonlinear transport in the fluctuation regime, we apply a generalized time-dependent Ginzburg-Landau theory that incorporates both the Aslamazov-Larkin contribution from fluctuation-induced Cooper pairs and the Maki-Thompson contribution associated with quantum interference in the Cooper channel. We further analyze the effects of disorder scattering and dephasing on the resulting nonreciprocal response.
Versions
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BibTeX
@misc{miranda2026electrical,
title = {{Electrical magnetochiral anisotropy in Rashba superconductors}},
author = {Joaquim Telles de Miranda and Maxim Khodas and Alex Levchenko},
howpublished = {arXiv},
year = {2026},
month = jun,
doi = {10.48550/arxiv.2606.19421},
eprint = {2606.19421},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.19421},
}
RIS
TY - UNPB
TI - Electrical magnetochiral anisotropy in Rashba superconductors
AU - Joaquim Telles de Miranda
AU - Maxim Khodas
AU - Alex Levchenko
PY - 2026
DA - 2026/06/17
PB - arXiv
DO - 10.48550/arxiv.2606.19421
UR - https://arxiv.org/abs/2606.19421
AB - We theoretically investigate the role of higher-order Lifshitz invariants in nonreciprocal charge transport in two-dimensional noncentrosymmetric superconductors with Rashba spin-orbit coupling. In the superconducting state, these symmetry-allowed terms give rise to critical-current nonreciprocity, while in the normal state near the superconducting transition they generate a pronounced magnetochiral anisotropy. Using symmetry-constrained group-theoretical methods, we systematically construct the allowed Lifshitz invariants and derive the corresponding vector structure of the nonreciprocal current. To describe nonlinear transport in the fluctuation regime, we apply a generalized time-dependent Ginzburg-Landau theory that incorporates both the Aslamazov-Larkin contribution from fluctuation-induced Cooper pairs and the Maki-Thompson contribution associated with quantum interference in the Cooper channel. We further analyze the effects of disorder scattering and dephasing on the resulting nonreciprocal response.
ER -