Two-dimensional superfluid density in an alkali metal-organic solvent intercalated iron selenide superconductor Li(C5H5N)0.2Fe2Se2

P. K. Biswas , Anna Krztoń-Maziopa , R. Khasanov , H. Luetkens , E. Pomjakushina , K. Conder , A. Amato

Abstract

We report the low-temperature electronic and magnetic properties of the alkali metal-organic solvent intercalated iron selenide superconductor Li(C5H5N)0.2Fe2Se2 using muon-spin-spectroscopy measurements. The zero-field muon spin relaxation (μSR) results indicate that nearly half of the sample is magnetically ordered and spatially phase separated from the superconducting region. The transverse-field μSR results reveal that the superfluid density of Li(C5H5N)0.2Fe2Se2 is two dimensional in nature. The temperature dependence of the penetration depth λ(T) can be explained using a two-gap s-wave model. This implies that, despite the 2D nature of the superfluid density, the symmetry of the superconducting gap remains unaltered to the parent compound FeSe.
Author P. K. Biswas - [Paul Scherrer Institut]
P. K. Biswas,,
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, Anna Krztoń-Maziopa (FC / CICSST)
Anna Krztoń-Maziopa,,
- Chair Of Inorganic Chemistry And Solid State Technology
, R. Khasanov - [Paul Scherrer Institut]
R. Khasanov,,
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, H. Luetkens - [Paul Scherrer Institut]
H. Luetkens,,
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, E. Pomjakushina - [Paul Scherrer Institut]
E. Pomjakushina,,
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, K. Conder - [Paul Scherrer Institut]
K. Conder,,
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, A. Amato - [Paul Scherrer Institut]
A. Amato,,
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Journal seriesPhysical Review Letters, ISSN 0031-9007
Issue year2013
Vol110
No13
Pages137003-137005
Publication size in sheets0.3
ASJC Classification3100 General Physics and Astronomy
DOIDOI:10.1103/PhysRevLett.110.137003
URL http://link.aps.org/doi/10.1103/PhysRevLett.110.137003
Languageen angielski
File
PhysRevLett.110.137003-superfluid.pdf 410.08 KB
Score (nominal)45
Score sourcejournalList
ScoreMinisterial score = 45.0, 31-01-2020, ArticleFromJournal
Ministerial score (2013-2016) = 45.0, 31-01-2020, ArticleFromJournal
Publication indicators Scopus Citations = 15; WoS Citations = 16; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 2.781; WoS Impact Factor: 2013 = 7.728 (2) - 2013=7.411 (5)
Citation count*12 (2015-11-27)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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