Electron scattering by magnetic impurity in Weyl semimetals

Impacto

Downloads

Downloads per month over past year

Díaz Fernández, Álvaro and Domínguez-Adame Acosta, Francisco and Abril, Óscar de (2021) Electron scattering by magnetic impurity in Weyl semimetals. New journal of physics, 23 (8). ISSN 1367-2630

[thumbnail of Dguez-Adame228libre+CC.pdf]
Preview
PDF
Creative Commons Attribution.

1MB

Official URL: http://dx.doi.org/10.1088/1367-2630/ac14ce




Abstract

Weyl semimetals are prominent examples of topologically protected quantum matter. These materials are the three-dimensional counterparts of graphene and great efforts are being devoted to achieve a thorough understanding of their fundamental physics. In this work, we aim at contributing to this end by discussing the effect of a single magnetic impurity in Weyl semimetals as a first step towards considering a larger number of point-like impurities. We find that resonances appear in the local density of states (LDOS) with a Friedel-like behaviour, oscillating as a function of distance. By studying the spin-resolved LDOS, we can observe non-trivial and anisotropic spin textures where the spin components perpendicular to the spin of the impurity wind around the latter, until the spin becomes completely parallel to the impurity right at the impurity's location. Friedel oscillations also play a relevant role in the form of the spin textures, forming an oscillatory pattern. We believe our results can pave the way to further studies which consider the presence of a large number of random magnetic impurities.


Item Type:Article
Additional Information:

©2021 The Author(s). Published by IOP Publishing
The authors thank Y Baba for discussions. We acknowledge financial support through Spanish grant PID2019-106820RB-C21.

Uncontrolled Keywords:Dirac; Transport; Surface; Discovery; Fermion; Weyl semimetal; Magnetic impurity; Electron scattering
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:67737
Deposited On:16 Sep 2021 18:27
Last Modified:17 Sep 2021 06:47

Origin of downloads

Repository Staff Only: item control page