English

Orbital Edelstein effect from density-wave order

Strongly Correlated Electrons 2019-08-21 v1

Abstract

Coupling between charge and spin, and magnetoelectric effects more generally, have been an area of great interest for several years, with the sought-after ability to control magnetic degrees of freedom via charge currents serving as an impetus. The orbital Edelstein effect (OEE) is a kinetic magnetoelectric effect consisting of a bulk orbital magnetization induced by a charge current. It is the orbital analogue of the spin Edelstein effect in spin-orbit coupled materials, in which a charge current drives nonzero electron spin magnetization. The OEE has recently been investigated in the context of Weyl semimetals and Weyl metals. Motivated by these developments, we study a model of electrons without spin-orbit coupling which exhibits line nodes that get gapped out by via symmetry breaking due to an interaction-induced charge density wave order. This model is shown to exhibit a temperature dependent OEE, which appears due to symmetry reduction into a gyrotropic crystal class.

Keywords

Cite

@article{arxiv.1904.04280,
  title  = {Orbital Edelstein effect from density-wave order},
  author = {Geremia Massarelli and Bryce Wu and Arun Paramekanti},
  journal= {arXiv preprint arXiv:1904.04280},
  year   = {2019}
}

Comments

10 pages, 10 figures

R2 v1 2026-06-23T08:33:23.029Z