This title appears in the Scientific Report :
2021
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevLett.126.176403 in citations.
Please use the identifier: http://hdl.handle.net/2128/29268 in citations.
Orbital Complexity in Intrinsic Magnetic Topological Insulators MnBi 4 Te 7 and MnBi 6 Te 10
Orbital Complexity in Intrinsic Magnetic Topological Insulators MnBi 4 Te 7 and MnBi 6 Te 10
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 topologic...
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Personal Name(s): | Vidal, R. C. |
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Bentmann, H. (Corresponding author) / Facio, J. I. / Heider, Tristan / Kagerer, P. / Fornari, C. I. / Peixoto, T. R. F. / Figgemeier, T. / Jung, S. / Cacho, C. / Büchner, B. / van den Brink, J. / Schneider, C. M. / Plucinski, L. / Schwier, E. F. / Shimada, K. / Richter, M. / Isaeva, A. / Reinert, F. | |
Contributing Institute: |
Elektronische Eigenschaften; PGI-6 |
Published in: | Physical review letters, 126 (2021) 17, S. 176403 |
Imprint: |
College Park, Md.
APS
2021
|
DOI: |
10.1103/PhysRevLett.126.176403 |
PubMed ID: |
33988442 |
Document Type: |
Journal Article |
Research Program: |
Topological Matter |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/29268 in citations.
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. |