Pressure cycle of superconducting Cs0.8Fe2Se2 : A transport study

G. Seyfarth , D. Jaccard , P. Pedrazzini , Anna Krztoń-Maziopa , E. Pomjakushina , K. Conder , Z. Shermadini

Abstract

We report measurements of the temperature and pressure dependence of the electrical resistivity of single crystalline iron-based chalcogenide Cs0.8Fe2Se2. In this material superconductivity Tc~30K develops from a normal state with extremely large resistivity. At ambient pressure a large "hump" in the resistivity is observed around 200K. Under pressure, the resistivity decreases by two orders of magnitude, concomitant with a sudden Tc suppression around p~8GPa. Even at 9GPa a metallic resistivity state is not recovered, and the {\rho}(T) "hump" is still detected. A comparison of the data measured upon increasing and decreasing the external pressure leads us to suggest that superconductivity is not related to this hump.
Author G. Seyfarth - [Universit de Genve]
G. Seyfarth,,
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, D. Jaccard - [Universit de Genve]
D. Jaccard,,
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, P. Pedrazzini - [Comision Nacional de Energia Atomica Argentina]
P. Pedrazzini,,
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, Anna Krztoń-Maziopa (FC / CICSST)
Anna Krztoń-Maziopa,,
- Chair Of Inorganic Chemistry And Solid State Technology
, E. Pomjakushina - [Paul Scherrer Institut]
E. Pomjakushina,,
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, K. Conder - [Paul Scherrer Institut]
K. Conder,,
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, Z. Shermadini - [Paul Scherrer Institut]
Z. Shermadini,,
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Journal seriesSolid State Communications, ISSN 0038-1098, (A 30 pkt)
Issue year2011
Vol151
Pages747-750
ASJC Classification2505 Materials Chemistry; 3104 Condensed Matter Physics; 1600 General Chemistry
DOIDOI:10.1016/j.ssc.2011.03.014
URL http://www.sciencedirect.com/science/article/pii/S0038109811001347
Languageen angielski
File
Pressure cycle of superconducting Cs0.8Fe2Se2 a transport study-2011-Solid State Comm.pdf 1.06 MB
Score (nominal)30
Score sourcejournalList
Publication indicators WoS Citations = 16; Scopus Citations = 16; Scopus SNIP (Source Normalised Impact per Paper): 2011 = 1.048; WoS Impact Factor: 2011 = 1.649 (2) - 2011=1.839 (5)
Citation count*18 (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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