Linked Life Data

21231191

Source:http://linkedlifedata.com/resource/pubmed/id/21231191

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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
19
pubmed:dateCreated
2011-1-14
pubmed:abstractText
We have performed angle-resolved photoemission spectroscopy of the iron-chalcogenide superconductor Fe1.03Te0.7Se0.3 to investigate the electronic structure relevant to superconductivity. We observed a holelike Fermi surface (FS) and an electronlike FS at the Brillouin zone center and corner, respectively, which are nearly nested by the Q?(?,?) wave vector. We do not find evidence for the nesting instability with Q?(?+?,0) reminiscent of the antiferromagnetic order in the parent compound Fe1+yTe. We have observed an isotropic superconducting (SC) gap along the holelike FS with the gap size ? of ?4 meV (2?/kBTc ? 7), demonstrating the strong-coupling superconductivity. The observed similarity of low-energy electronic excitations between iron-chalcogenides and iron-arsenides strongly suggests that common interactions which involve Q?(?,?) scattering are responsible for the SC pairing.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Nov
pubmed:issn
1079-7114
pubmed:author
pubmed:issnType
Electronic
pubmed:day
5
pubmed:volume
105
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
197001
pubmed:year
2010
pubmed:articleTitle
Angle-resolved photoemission spectroscopy of the iron-chalcogenide superconductor Fe1.03Te0.7Se0.3: strong coupling behavior and the universality of interband scattering.
pubmed:affiliation
Department of Physics, Tohoku University, Sendai 980-8578, Japan.
pubmed:publicationType
Journal Article