Effect of external pressure on Tc of as-grown and thermally treated superconducting Rbx Fe2–ySe2 single crystals

M. Kanagaraj , Anna Krztoń-Maziopa , G. Kalai Selvan , E. Pomjakushina , K. Conder , S. Weyeneth , R. Puzniak , S. Arumugam

Abstract

We report on the effect of external pressure on the superconducting transition temperature (Tc) of as-grown and thermally treated single crystals of superconducting iron chalcogenide Rb0.85Fe1.9Se2. The superconducting transition temperature of 27.1 K at ambient pressure for the as-grown sample was found to increase up to 33.2 K for the sample annealed for 3 h at 215 °C in vacuum. An increase of Tc up to 28.2 K was observed for the as-grown sample at a pressure of 0.83 GPa. For all the studied crystals, annealed in the temperature range between 215 °C and 290 °C, the external pressure seems to decrease the superconducting transition temperature and a negative pressure coefficient of Tc was observed. (© 2012 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim)
Author M. Kanagaraj - [Bharathidasan University]
M. Kanagaraj,,
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, Anna Krztoń-Maziopa (FC / CICSST)
Anna Krztoń-Maziopa,,
- Chair Of Inorganic Chemistry And Solid State Technology
, G. Kalai Selvan - [Bharathidasan University]
G. Kalai Selvan,,
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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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, S. Weyeneth - [University of Zurich (UZH)]
S. Weyeneth,,
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- Universität Zürich
, R. Puzniak - [Institute of Physics of the Polish Academy of Sciences]
R. Puzniak,,
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, S. Arumugam - [Bharathidasan University]
S. Arumugam,,
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Journal seriesPhysica Status Solidi-Rapid Research Letters, ISSN 1862-6254
Issue year2013
Vol7
No3
Pages218-220
Publication size in sheets0.3
Keywords in EnglishAnnealing, high pressure effects, iron chalcogenides, magnetisation, superconductivity
ASJC Classification3104 Condensed Matter Physics; 2500 General Materials Science
DOIDOI:10.1002/pssr.201206426
URL http://onlinelibrary.wiley.com/doi/10.1002/pssr.201206426/abstract
Languageen angielski
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RRL-pressure effect RbxFe2Se2-2013.pdf 394.85 KB
Score (nominal)35
Score sourcejournalList
ScoreMinisterial score = 35.0, 17-07-2020, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 17-07-2020, ArticleFromJournal
Publication indicators Scopus Citations = 3; WoS Citations = 2; Scopus SNIP (Source Normalised Impact per Paper): 2014 = 0.942; WoS Impact Factor: 2013 = 2.343 (2) - 2013=2.187 (5)
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