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Anisotropic fixed points in Dirac and Weyl semimetals
Inst Ciencia Mat Madrid, Madrid 28049, Spain.;CSIC, Madrid 28049, Spain..
KTH, School of Engineering Sciences (SCI), Physics, Condensed Matter Theory.
Inst Ciencia Mat Madrid, Madrid 28049, Spain.;CSIC, Madrid 28049, Spain..
2018 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 98, no 11, article id 115122Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
American Physical Society, 2018. Vol. 98, no 11, article id 115122
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Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-235438DOI: 10.1103/PhysRevB.98.115122ISI: 000444598300002Scopus ID: 2-s2.0-85053455067OAI: oai:DiVA.org:kth-235438DiVA, id: diva2:1251446
Note

QC 20180927

Available from: 2018-09-27 Created: 2018-09-27 Last updated: 2018-10-02Bibliographically approved

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