publication . Article . Preprint . 2017

Emerging chiral edge states from the confinement of a magnetic Weyl semimetal in Co3Sn2S2

Lukas Muechler; Enke Liu; Jacob Gayles; Qiunan Xu; Claudia Felser; Yan Sun;
Open Access
  • Published: 21 Dec 2017 Journal: Physical Review B, volume 101 (issn: 2469-9950, eissn: 2469-9969, Copyright policy)
  • Publisher: American Physical Society (APS)
Abstract
The quantum anomalous Hall effect (QAHE) and magnetic Weyl semimetals (WSMs) are topological states induced by intrinsic magnetic moments and spin-orbit coupling. Their similarity suggests the possibility of achieving the QAHE by dimensional confinement of a magnetic WSM along one direction. In this study, we investigate the emergence of the QAHE in the two-dimensional (2D) limit of magnetic WSMs due to finite size effects in thin films and step-edges. We demonstrate the feasibility of this approach with effective models and real materials. To this end, we have chosen the layered magnetic WSM Co$_3$Sn$_2$S$_2$, which features a large anomalous Hall conductivity ...
Subjects
free text keywords: Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Materials Science
Funded by
EC| TOPMAT
Project
TOPMAT
Topological Materials: New Fermions, Realization of Single Crystals and their Physical Properties
  • Funder: European Commission (EC)
  • Project Code: 742068
  • Funding stream: H2020 | ERC | ERC-ADG
,
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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publication . Article . Preprint . 2017

Emerging chiral edge states from the confinement of a magnetic Weyl semimetal in Co3Sn2S2

Lukas Muechler; Enke Liu; Jacob Gayles; Qiunan Xu; Claudia Felser; Yan Sun;