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  Dirac cone and pseudogapped density of states in the topological half-Heusler compound YPtBi

Kronenberg, A., Braun, J., Minar, J., Elmers, H.-J., Kutnyakhov, D., Zaporozhchenko, A. V., et al. (2016). Dirac cone and pseudogapped density of states in the topological half-Heusler compound YPtBi. Physical Review B, 94(16): 161108(R), pp. 1-5. doi:10.1103/PhysRevB.94.161108.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002B-B9D8-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-9CB8-0
Genre: Journal Article

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 Creators:
Kronenberg, A.1, Author
Braun, J.1, Author
Minar, J.1, Author
Elmers, H.-J.1, Author
Kutnyakhov, D.1, Author
Zaporozhchenko, A. V.1, Author
Wallauer, R.1, Author
Chernov, S.1, Author
Medjanik, K.1, Author
Schoenhense, G.1, Author
Klaeui, M.1, Author
Chadov, S.2, Author              
Ebert, H.1, Author
Jourdan, M.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Stanislav Chadov, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863440              

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 Abstract: Topological insulators (TIs) are exciting materials, which exhibit unprecedented properties, such as helical spin-momentum locking, which leads to large torques for magnetic switching and highly efficient spin current detection. Here we explore the compound YPtBi, an example from the class of half-Heusler materials, for which the typical band inversion of topological insulators was predicted. We prepared this material as thin films by conventional cosputtering from elementary targets. By in situ time-of-flight momentum microscopy, a Dirac conelike surface state with a Dirac point similar or equal to 300 meV below the Fermi energy was observed, in agreement with electronic structure-photoemission calculations. Only little additional spectral weight due to other states was observed at E-F, which corroborates the identification of the topologically protected surface state and is highly relevant for spintronics applications.

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Language(s): eng - English
 Dates: 2016-10-062016-10-06
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 94 (16) Sequence Number: 161108(R) Start / End Page: 1 - 5 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008