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  Topological Electronic Structure and Intrinsic Magnetization in MnBi4Te7: A Bi2Te3 Derivative with a Periodic Mn Sublattice

Vidal, R. C., Zeugner, A., Facio I, J., Ray, R., Haghighi, M. H., Wolter, A. U. B., et al. (2019). Topological Electronic Structure and Intrinsic Magnetization in MnBi4Te7: A Bi2Te3 Derivative with a Periodic Mn Sublattice. Physical Review X, 9(4): 041065, pp. 1-13. doi:10.1103/PhysRevX.9.041065.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-8152-C Version Permalink: http://hdl.handle.net/21.11116/0000-0005-815A-4
Genre: Journal Article

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 Creators:
Vidal, Raphael C.1, Author
Zeugner, Alexander1, Author
Facio I, Jorge1, Author
Ray, Rajyavardhan1, Author
Haghighi, M. Hossein1, Author
Wolter, Anja U. B.1, Author
Bohorquez, Laura T. Corredor1, Author
Caglieris, Federico1, Author
Moser, Simon1, Author
Figgemeier, Tim1, Author
Peixoto, Thiago R. F.1, Author
Vasili, Hari Babu1, Author
Valvidares, Manuel1, Author
Jung, Sungwon1, Author
Cacho, Cephise1, Author
Alfonsov, Alexey1, Author
Mehlawat, Kavita1, Author
Kataev, Vladislav1, Author
Hess, Christian1, Author
Richter, Manuel1, Author
Buechner, Bernd1, Authorvan den Brink, Jeroen1, AuthorRuck, Michael2, Author              Reinert, Friedrich1, AuthorBentmann, Hendrik1, AuthorIsaeva, Anna1, Author more..
Affiliations:
1External Organizations, ou_persistent22              
2Michael Ruck, Max Planck Fellow, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863444              

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 Abstract: Combinations of nontrivial band topology and long-range magnetic order hold promise for realizations of novel spintronic phenomena, such as the quantum anomalous Hall effect and the topological magnetoelectric effect. Following theoretical advances, material candidates are emerging. Yet, so far a compound that combines a band-inverted electronic structure with an intrinsic net magnetization remains unrealized. MnBi2Te4 has been established as the first antiferromagnetic topological insulator and constitutes the progenitor of a modular (Bi2Te3)(n) (MnBi2Te4) series. Here, for n = 1, we confirm a nonstoichiometric composition proximate to MnBi4Te7. We establish an antiferromagnetic state below 13 K followed by a state with a net magnetization and ferromagnetic-like hysteresis below 5 K. Angle-resolved photoemission experiments and density-functional calculations reveal a topologically nontrivial surface state on the MnBi4Te7(0001) surface, analogous to the nonmagnetic parent compound Bi2Te3. Our results establish MnBi4Te7 as the first band-inverted compound with intrinsic net magnetization providing a versatile platform for the realization of magnetic topological states of matter.

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Language(s): eng - English
 Dates: 2019-12-312019-12-31
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000504984700001
DOI: 10.1103/PhysRevX.9.041065
 Degree: -

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Title: Physical Review X
  Abbreviation : Phys. Rev. X
Source Genre: Journal
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Publ. Info: New York, NY : American Physical Society
Pages: - Volume / Issue: 9 (4) Sequence Number: 041065 Start / End Page: 1 - 13 Identifier: Other: 2160-3308
CoNE: https://pure.mpg.de/cone/journals/resource/2160-3308