Importance of structural distortions in enhancement of transition temperature in FeSe1-xTex superconductors
Data(s) |
2015
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Resumo |
Temperature (12 K <= T <= 300 K) dependent extended x-ray absorption fine structure (EXAFS) studies at the Fe K edge in FeSe1-xTex (x = 0, 0.5 and 1.0) compounds have been carried out to understand the reasons for the increase in T-C upon Te doping in FeSe. While local distortions are present near superconducting onset in FeSe and FeSe0.5Te0.5, they seem to be absent in non superconducting FeTe. Of crucial importance is the variation of anion height. In FeSe0.5Te0.5, near the superconducting onset, the two heights, h(Fe-Se) and h(Fe-Te) show a nearly opposite behaviour. These changes indicate a possible correlation between Fe-chalcogen hybridization and the superconducting transition temperature in these Fe-chalcogenides. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/51408/1/sup_sci_tec-28_1_2015.pdf Ingle, Kapil E and Priolkar, KR and Pal, Anand and Zargar, Rayees A and Awana, VPS and Emura, S (2015) Importance of structural distortions in enhancement of transition temperature in FeSe1-xTex superconductors. In: SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 28 (1). |
Publicador |
IOP PUBLISHING LTD |
Relação |
http://dx.doi.org/10.1088/0953-2048/28/1/015015 http://eprints.iisc.ernet.in/51408/ |
Palavras-Chave | #Physics |
Tipo |
Journal Article PeerReviewed |