Ultrafast photocurrents at the surface of the three-dimensional topological insulator Bi2Se3

Surface currents in topological insulators can be controlled by light, but the underlying mechanisms are not well understood. Here, Braun et al. report an ultrafast shift photocurrent at the surface of Ca-doped Bi2Se3, whereas injection currents are much smaller than expected from asymmetric depopul...

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Autores principales:	Lukas Braun, Gregor Mussler, Andrzej Hruban, Marcin Konczykowski, Thomas Schumann, Martin Wolf, Markus Münzenberg, Luca Perfetti, Tobias Kampfrath
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2016
Materias:	Science Q
Acceso en línea:	https://doaj.org/article/ad34a2be6cc348a7bc539c9304f998dd
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spelling	oai:doaj.org-article:ad34a2be6cc348a7bc539c9304f998dd2021-12-02T17:31:33ZUltrafast photocurrents at the surface of the three-dimensional topological insulator Bi2Se310.1038/ncomms132592041-1723https://doaj.org/article/ad34a2be6cc348a7bc539c9304f998dd2016-10-01T00:00:00Zhttps://doi.org/10.1038/ncomms13259https://doaj.org/toc/2041-1723Surface currents in topological insulators can be controlled by light, but the underlying mechanisms are not well understood. Here, Braun et al. report an ultrafast shift photocurrent at the surface of Ca-doped Bi2Se3, whereas injection currents are much smaller than expected from asymmetric depopulation of the Dirac cone.Lukas BraunGregor MusslerAndrzej HrubanMarcin KonczykowskiThomas SchumannMartin WolfMarkus MünzenbergLuca PerfettiTobias KampfrathNature PortfolioarticleScienceQENNature Communications, Vol 7, Iss 1, Pp 1-9 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	Science Q
spellingShingle	Science Q Lukas Braun Gregor Mussler Andrzej Hruban Marcin Konczykowski Thomas Schumann Martin Wolf Markus Münzenberg Luca Perfetti Tobias Kampfrath Ultrafast photocurrents at the surface of the three-dimensional topological insulator Bi2Se3
description	Surface currents in topological insulators can be controlled by light, but the underlying mechanisms are not well understood. Here, Braun et al. report an ultrafast shift photocurrent at the surface of Ca-doped Bi2Se3, whereas injection currents are much smaller than expected from asymmetric depopulation of the Dirac cone.
format	article
author	Lukas Braun Gregor Mussler Andrzej Hruban Marcin Konczykowski Thomas Schumann Martin Wolf Markus Münzenberg Luca Perfetti Tobias Kampfrath
author_facet	Lukas Braun Gregor Mussler Andrzej Hruban Marcin Konczykowski Thomas Schumann Martin Wolf Markus Münzenberg Luca Perfetti Tobias Kampfrath
author_sort	Lukas Braun
title	Ultrafast photocurrents at the surface of the three-dimensional topological insulator Bi2Se3
title_short	Ultrafast photocurrents at the surface of the three-dimensional topological insulator Bi2Se3
title_full	Ultrafast photocurrents at the surface of the three-dimensional topological insulator Bi2Se3
title_fullStr	Ultrafast photocurrents at the surface of the three-dimensional topological insulator Bi2Se3
title_full_unstemmed	Ultrafast photocurrents at the surface of the three-dimensional topological insulator Bi2Se3
title_sort	ultrafast photocurrents at the surface of the three-dimensional topological insulator bi2se3
publisher	Nature Portfolio
publishDate	2016
url	https://doaj.org/article/ad34a2be6cc348a7bc539c9304f998dd
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Ultrafast photocurrents at the surface of the three-dimensional topological insulator Bi2Se3

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