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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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Yan, Binghai1, Autor           
Stadtmüller, Benjamin2, Autor
Haag, Norman2, Autor
Jakobs, Sebastian2, Autor
Seidel, Johannes2, Autor
Jungkenn, Dominik2, Autor
Mathias, Stefan2, Autor
Cinchetti, Mirko2, Autor
Aeschlimann, Martin2, Autor
Felser, Claudia3, Autor           
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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 Zusammenfassung: 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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Sprache(n): eng - English
 Datum: 2015-12-142015-12-14
 Publikationsstatus: Erschienen
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 Ort, Verlag, Ausgabe: -
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 Identifikatoren: DOI: 10.1038/ncomms10167
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Titel: Nature Communications
  Kurztitel : Nat. Commun.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: London : Nature Publishing Group
Seiten: - Band / Heft: 6 (12) Artikelnummer: 10167 Start- / Endseite: 1 - 6 Identifikator: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723