Topological states on the gold surface

Binghai Yan; Benjamin Stadtmueller; Norman Haag; Sebastian Jakobs; Johannes Seidel; Dominik Jungkenn; Stefan Mathias; Mirko Cinchetti; Martin Aeschlimann; Claudia Felser

doi:https://doi.org/10.1038/ncomms10167

Topological states on the gold surface

Binghai Yan, Benjamin Stadtmueller, Norman Haag, Sebastian Jakobs, Johannes Seidel, Dominik Jungkenn, Stefan Mathias, Mirko Cinchetti, Martin Aeschlimann, Claudia Felser

Weizmann Institute Of Science

Weizmann Institute Of Science

Research output: Contribution to journal › Article › peer-review

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 Z(2)-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.

Original language	English
Article number	10167
Number of pages	6
Journal	Nature Communications
Volume	6
DOIs	https://doi.org/10.1038/ncomms10167
State	Published - Dec 2015

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@article{a041e77053604797892117efcc49311e,

title = "Topological states on the gold surface",

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 Z(2)-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.",

author = "Binghai Yan and Benjamin Stadtmueller and Norman Haag and Sebastian Jakobs and Johannes Seidel and Dominik Jungkenn and Stefan Mathias and Mirko Cinchetti and Martin Aeschlimann and Claudia Felser",

note = "ERC Advanced Grant [291472]",

year = "2015",

month = dec,

doi = "https://doi.org/10.1038/ncomms10167",

language = "الإنجليزيّة",

volume = "6",

journal = "Nature Communications",

issn = "2041-1723",

publisher = "Nature Publishing Group",

}

TY - JOUR

T1 - Topological states on the gold surface

AU - Yan, Binghai

AU - Stadtmueller, Benjamin

AU - Haag, Norman

AU - Jakobs, Sebastian

AU - Seidel, Johannes

AU - Jungkenn, Dominik

AU - Mathias, Stefan

AU - Cinchetti, Mirko

AU - Aeschlimann, Martin

AU - Felser, Claudia

N1 - ERC Advanced Grant [291472]

PY - 2015/12

Y1 - 2015/12

N2 - 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 Z(2)-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.

AB - 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 Z(2)-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.

U2 - https://doi.org/10.1038/ncomms10167

DO - https://doi.org/10.1038/ncomms10167

M3 - مقالة

SN - 2041-1723

VL - 6

JO - Nature Communications

JF - Nature Communications

M1 - 10167

ER -

Topological states on the gold surface

Abstract

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