Anisotropic fixed points in Dirac and Weyl semimetals
Strongly Correlated Electrons
2018-09-26 v3
Abstract
The effective low energy description of interacting Dirac and Weyl semimetals is that of massless quantum electrodynamics with several Lorentz breaking material parameters. We perform a renormalization group analysis of Coulomb interaction in anisotropic Dirac and Weyl semimetals and show that the anisotropy persists in the material systems at the infrared fixed point. In addition, a tilt of the fermion cones breaking inversion symmetry induces a magnetoelectric term in the electrodynamics of the material whose magnitude runs to match that of the electronic tilt at the fixed point.
Cite
@article{arxiv.1802.02632,
title = {Anisotropic fixed points in Dirac and Weyl semimetals},
author = {Oscar Pozo and Yago Ferreiros and María A. H. Vozmediano},
journal= {arXiv preprint arXiv:1802.02632},
year = {2018}
}
Comments
Version as published. Title changed