RT Journal Article
T1 Electron scattering by magnetic impurity in Weyl semimetals
A1 Díaz Fernández, Álvaro
A1 Domínguez-Adame Acosta, Francisco
A1 Abril, Óscar de
AB 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.
PB IOP Publishing
SN 1367-2630
YR 2021
FD 2021-08
LK https://hdl.handle.net/20.500.14352/4424
UL https://hdl.handle.net/20.500.14352/4424
LA eng
NO ©2021 The Author(s). Published by IOP PublishingThe authors thank Y Baba for discussions. We acknowledge financial support through Spanish grant PID2019-106820RB-C21.
NO Ministerio de Ciencia e Innovación (MICINN)
DS Docta Complutense
RD 17 ago 2024