publication . Preprint . 2017

Topological surface Fermi arcs in magnetic Weyl semimetal Co$_3$Sn$_2$S$_2$

Xu, Qiunan; Liu, Enke; Shi, Wujun; Muechler, Lukas; Felser, Claudia; Sun, Yan;
Open Access English
  • Published: 30 Dec 2017
Abstract
Very recently, the half-metallic compound Co$_3$Sn$_2$S$_2$ was predicted to be a magnetic WSM with Weyl points only 60 meV above the Fermi level ($E_F$). Owing to the low charge carrier density and large Berry curvature induced, Co$_3$Sn$_2$S$_2$ possesses both a large anomalous Hall conductivity (AHC) and a large anomalous Hall angle (AHA), which provide strong evidence for the existence of Weyl points in Co$_3$Sn$_2$S$_2$. In this work, we theoretically studied the surface topological feature of Co$_3$Sn$_2$S$_2$ and its counterpart Co$_3$Sn$_2$Se$_2$. By cleaving the sample at the weak Sn-S/Se bonds, one can achieve two different surfaces terminated with Sn ...
Subjects
arXiv: Condensed Matter::Strongly Correlated Electrons
free text keywords: Condensed Matter - Materials Science
Related Organizations
Funded by
EC| IDEA HEUSLER!
Project
IDEA HEUSLER!
Inverse Design on an Atomic scale: Multifunctional Heusler compounds!
  • Funder: European Commission (EC)
  • Project Code: 291472
  • Funding stream: FP7 | SP2 | ERC
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