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dc.contributor.author
Cancellieri, Claudia
dc.contributor.author
Mishchenko, Andrei S.
dc.contributor.author
Aschauer, Ulrich
dc.contributor.author
Filippetti, Alessio
dc.contributor.author
Faber, Carina
dc.contributor.author
Bariši, O.S.
dc.contributor.author
Rogalev, V.A.
dc.contributor.author
Schmitt, Thorsten
dc.contributor.author
Nagaosa, Naoto
dc.contributor.author
Strocov, Vladimir N.
dc.date.accessioned
2018-09-06T14:47:33Z
dc.date.available
2017-06-12T01:10:25Z
dc.date.available
2018-09-06T14:47:33Z
dc.date.issued
2016
dc.identifier.issn
2041-1723
dc.identifier.other
10.1038/ncomms10386
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/113195
dc.identifier.doi
10.3929/ethz-b-000113195
dc.description.abstract
Interplay of spin, charge, orbital and lattice degrees of freedom in oxide heterostructures results in a plethora of fascinating properties, which can be exploited in new generations of electronic devices with enhanced functionalities. The paradigm example is the interface between the two band insulators LaAlO3 and SrTiO3 that hosts a two-dimensional electron system. Apart from the mobile charge carriers, this system exhibits a range of intriguing properties such as field effect, superconductivity and ferromagnetism, whose fundamental origins are still debated. Here we use soft-X-ray angle-resolved photoelectron spectroscopy to penetrate through the LaAlO3 overlayer and access charge carriers at the buried interface. The experimental spectral function directly identifies the interface charge carriers as large polarons, emerging from coupling of charge and lattice degrees of freedom, and involving two phonons of different energy and thermal activity. This phenomenon fundamentally limits the carrier mobility and explains its puzzling drop at high temperatures.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Nature
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Polaronic metal state at the LaAlO 3 /SrTiO 3 interface
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2016-01-27
ethz.journal.title
Nature Communications
ethz.journal.volume
7
en_US
ethz.journal.abbreviated
Nat Commun
ethz.pages.start
10386
en_US
ethz.size
8 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.identifier.nebis
007044158
ethz.publication.place
London
ethz.publication.status
published
en_US
ethz.date.deposited
2017-06-12T01:13:57Z
ethz.source
ECIT
ethz.identifier.importid
imp59365422b9c4598712
ethz.ecitpid
pub:174862
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-13T13:28:28Z
ethz.rosetta.lastUpdated
2024-02-02T05:58:22Z
ethz.rosetta.versionExported
true
ethz.COinS
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