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dc.contributor.author
Evtushinsky, Daniil V.
dc.contributor.author
Inosov, Dmytro S.
dc.contributor.author
Zabolotnyy, Volodymyr
dc.contributor.author
Viazovska, Maryna S.
dc.contributor.author
Khasanov, Rustem
dc.contributor.author
Amato, Alex
dc.contributor.author
Klauß, Hans H.
dc.contributor.author
Luetkens, Hubertus
dc.contributor.author
Niedermayer, Christof
dc.contributor.author
Sun, Guoli
dc.contributor.author
Hinkov, Vladimir
dc.contributor.author
Lin, Chengtian
dc.contributor.author
Varykhalov, Andrei
dc.contributor.author
Koitzsch, Andreas
dc.contributor.author
Knupfer, Martin
dc.contributor.author
Büchner, Bernd
dc.contributor.author
Kordyuk, Alexander
dc.contributor.author
Borisenko, Sergey
dc.date.accessioned
2018-10-25T15:20:01Z
dc.date.available
2017-06-14T10:02:10Z
dc.date.available
2018-07-11T12:25:07Z
dc.date.available
2018-10-25T15:18:08Z
dc.date.available
2018-10-25T15:20:01Z
dc.date.issued
2009-05
dc.identifier.issn
1367-2630
dc.identifier.other
10.1088/1367-2630/11/5/055069
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/156571
dc.identifier.doi
10.3929/ethz-b-000156571
dc.description.abstract
Here we present a calculation of the temperature-dependent London penetration depth, λ(T), in Ba1-xKxFe2As2 (BKFA) on the basis of the electronic band structure (Zabolotnyy et al 2009 Nature 457 569, Zabolotnyy et al 2009 Physica C 469 448) and momentum-dependent superconducting gap (Evtushinsky et al 2009 Phys. Rev. B 79 054517) extracted from angle-resolved photoemission spectroscopy (ARPES) data. The results are compared to the direct measurements of λ(T) by muon spin rotation (μSR) (Khasanov et al 2009 Phys. Rev. Lett. 102 187005). The value of λ(T=0), calculated with no adjustable parameters, equals 270 nm, while the directly measured one is 320 nm; the temperature dependence λ(T) is also easily reproduced. Such agreement between the two completely different approaches allows us to conclude that ARPES studies of BKFA are bulk-representative. Our review of the available experimental studies of the superconducting gap in the new iron-based superconductors in general allows us to state that most of them bear two nearly isotropic gaps with coupling constants 2Δ/kBTc=2.5±1.5 and 7±2.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Institute of Physics
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Momentum-resolved superconducting gap in the bulk of Ba1−xKxFe2As2 from combined ARPES and μSR measurements
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2009-05-29
ethz.journal.title
New Journal of Physics
ethz.journal.volume
11
en_US
ethz.journal.issue
5
en_US
ethz.journal.abbreviated
New j. phys.
ethz.pages.start
55069
en_US
ethz.size
13 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.nebis
001997538
ethz.publication.place
London
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2017-06-14T10:10:20Z
ethz.source
ECIT
ethz.identifier.importid
imp59364cd64692465309
ethz.ecitpid
pub:34766
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-20T13:46:16Z
ethz.rosetta.lastUpdated
2018-10-25T15:20:07Z
ethz.rosetta.versionExported
true
ethz.COinS
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