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  Challenges of Topological Insulator Research: Bi2Te3 Thin Films and Magnetic Heterostructures

Pereira, V. M., Wu, C.-N., Höfer, K., Choa, A., Knight, C.-A., Swanson, J., et al. (2020). Challenges of Topological Insulator Research: Bi2Te3 Thin Films and Magnetic Heterostructures. Physica Status Solidi B, 2000346, pp. 1-16. doi:10.1002/pssb.202000346.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-330C-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-331A-3
Genre: Journal Article

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 Creators:
Pereira, Vanda M.1, Author              
Wu, Chi-Nan1, Author              
Höfer, Katharina1, Author              
Choa, Arnold1, Author              
Knight, Cariad-A.1, Author              
Swanson, Jesse1, Author              
Becker, Christoph1, Author              
Komarek, Alexander C.2, Author              
Rata, A. Diana3, Author              
Rößler, Sahana1, Author              
Wirth, Steffen4, Author              
Guo, Mengxin5, Author
Hong, Minghwei5, Author
Kwo, Jueinai5, Author
Tjeng, Liu Hao6, Author              
Altendorf, Simone G.7, Author              
Affiliations:
1Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
2Alexander Komarek, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863446              
3Diana Rata, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863449              
4Steffen Wirth, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863460              
5External Organizations, ou_persistent22              
6Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863452              
7Simone Altendorf, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863458              

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 Abstract: Topological insulators (TIs) are of particular interest in the recent solid-state research because of their exceptional features stemming from the conducting, topologically protected surface states. The exotic properties include the occurrence of novel quantum phenomena and make them promising materials for spintronics and quantum computing applications. Theoretical studies have provided a vast amount of valuable predictions and proposals, whose experimental observation and implementation, to date, are often hindered by an insufficient sample quality. The effect of even a relatively low concentration of defects can make the access to purely topological surface states impossible. This points out the need of high-quality bulk-insulating materials with ultra-clean surfaces/interfaces, which requires sophisticated sample/device preparations as well as special precautions during the measurements. Herein, the challenging work on 3D TI thin films with a focus onBi2Te3is reported. It covers the optimization of the molecular beam epitaxy growth process, the in situ characterization of surface states and transport properties, the influence of exposure to ambient gases and of capping layers, as well as the effect of interfacing TI thin film with magnetic materials.

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Language(s): eng - English
 Dates: 2020-09-302020-09-30
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000571487500001
DOI: 10.1002/pssb.202000346
 Degree: -

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Title: Physica Status Solidi B
  Abbreviation : Phys. Status Solidi B
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: - Sequence Number: 2000346 Start / End Page: 1 - 16 Identifier: ISSN: 0370-1972
CoNE: https://pure.mpg.de/cone/journals/resource/958480240330