Journal Article FZJ-2021-04764

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png
Orbital Complexity in Intrinsic Magnetic Topological Insulators MnBi 4 Te 7 and MnBi 6 Te 10

 ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;  ;

2021
APS College Park, Md.

Physical review letters 126(17), 176403 () [10.1103/PhysRevLett.126.176403]

This record in other databases:      

Please use a persistent id in citations:   doi:

Abstract: Using angle-resolved photoelectron spectroscopy (ARPES), we investigate the surface electronic structure of the magnetic van der Waals compounds MnBi4Te7 and MnBi6Te10, the n=1 and 2 members of a modular (Bi2Te3)n(MnBi2Te4) series, which have attracted recent interest as intrinsic magnetic topological insulators. Combining circular dichroic, spin-resolved and photon-energy-dependent ARPES measurements with calculations based on density functional theory, we unveil complex momentum-dependent orbital and spin textures in the surface electronic structure and disentangle topological from trivial surface bands. We find that the Dirac-cone dispersion of the topologial surface state is strongly perturbed by hybridization with valence-band states for Bi2Te3-terminated surfaces but remains preserved for MnBi2Te4-terminated surfaces. Our results firmly establish the topologically nontrivial nature of these magnetic van der Waals materials and indicate that the possibility of realizing a quantized anomalous Hall conductivity depends on surface termination.

Classification:

Contributing Institute(s):
  1. Elektronische Eigenschaften (PGI-6)
Research Program(s):
  1. 5211 - Topological Matter (POF4-521) (POF4-521)

Appears in the scientific report 2021
Database coverage:
Medline ; American Physical Society Transfer of Copyright Agreement ; OpenAccess ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; NationallizenzNationallizenz ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection
Click to display QR Code for this record

The record appears in these collections:
Document types > Articles > Journal Article
Institute Collections > PGI > PGI-6
Workflow collections > Public records
Publications database
Open Access

 Record created 2021-12-01, last modified 2022-01-03


OpenAccess:
Download fulltext PDF
External link:
Download fulltextFulltext by OpenAccess repository
Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)