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Author Seyfarth, G.; Jaccard, D.; Pedrazzini, P.; Krzton-Maziopa, A.; Pomjakushina, E.; Conder, K.; Shermadini, Z. doi  openurl
  Title (up) Pressure cycle of superconducting Cs0.8Fe2Se2 : A transport study Type Journal Article
  Year 2011 Publication Solid State Communications Abbreviated Journal Solid State Commun.  
  Volume 151 Issue 10 Pages 747-750  
  Keywords Fe; Se; chalcogenides; Superconductivity; High pressure; electrical resistivity  
  Abstract We report measurements of the temperature and pressure dependence of the electrical resistivity (ρ) of single-crystalline iron-based chalcogenide Cs0.8Fe2Se2. In this material, superconductivity with a transition temperature Tc~30K source develops from a normal state with extremely large resistivity. At ambient pressure, a large “hump” in the resistivity is observed around 200 K. Under pressure, the resistivity decreases by two orders of magnitude, concomitant with a sudden Tc suppression around pc~30K. Even at 9 GPa a metallic resistivity state is not recovered, and the ρ(T) “hump” is still detected. A comparison of the data measured upon increasing and decreasing the external pressure leads us to suggest that the superconductivity is not related to this hump.  
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  Call Number BT @ pedrazp @ Serial 604  
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