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  Topological states on the gold surface

Yan, B., Stadtmüller, B., Haag, N., Jakobs, S., Seidel, J., Jungkenn, D., et al. (2015). Topological states on the gold surface. Nature Communications, 6(12): 10167, pp. 1-6. doi:10.1038/ncomms10167.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-4353-D Version Permalink: http://hdl.handle.net/21.11116/0000-0001-182A-6
Genre: Journal Article

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 Creators:
Yan, Binghai1, Author              
Stadtmüller, Benjamin2, Author
Haag, Norman2, Author
Jakobs, Sebastian2, Author
Seidel, Johannes2, Author
Jungkenn, Dominik2, Author
Mathias, Stefan2, Author
Cinchetti, Mirko2, Author
Aeschlimann, Martin2, Author
Felser, Claudia3, Author              
Affiliations:
1Binghai Yan, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863427              
2External Organizations, ou_persistent22              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: Gold surfaces host special electronic states that have been understood as a prototype of Shockley surface states. These surface states are commonly employed to benchmark the capability of angle-resolved photoemission spectroscopy (ARPES) and scanning tunnelling spectroscopy. Here we show that these Shockley surface states can be reinterpreted as topologically derived surface states (TDSSs) of a topological insulator (TI), a recently discovered quantum state. Based on band structure calculations, the Z2-type invariants of gold can be well-defined to characterize a TI. Further, our ARPES measurement validates TDSSs by detecting the dispersion of unoccupied surface states. The same TDSSs are also recognized on surfaces of other well-known noble metals (for example, silver, copper, platinum and palladium), which shines a new light on these long-known surface states.

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Language(s): eng - English
 Dates: 2015-12-142015-12-14
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1038/ncomms10167
 Degree: -

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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 6 (12) Sequence Number: 10167 Start / End Page: 1 - 6 Identifier: ISSN: 2041-1723
CoNE: /journals/resource/2041-1723