Local structural distortions and their role in superconductivity in SmFeAsO1-xFx superconductors

Ingle, Kapil and Priolkar, KR and Pal, Anand and Awana, VPS and Emura, S (2014) Local structural distortions and their role in superconductivity in SmFeAsO1-xFx superconductors. In: SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 27 (7).

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Abstract

EXAFS studies at the As K edge as a function of temperature were carried out in SmFeAsO1-xFx (x = 0 and 0.2) compounds to understand the role of local structural distortions in superconductivity observed in F-doped compounds. A significant correlation between the thermal variation of local structural parameters such as anion height and superconducting onset is found in the fluorinated compounds. Such a variation in anion height is absent in the non-superconducting compound. An increase in the Fe-As bond distance just below the superconducting onset temperature indicates a similarity between the distortions observed in the high-T-C cuprates and these Fe-based superconductors.

Item Type:	Journal Article
Publication:	SUPERCONDUCTOR SCIENCE & TECHNOLOGY
Additional Information:	copyright of this article belongs to IOP PUBLISHING LTD,ENGLAND
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	19 Aug 2014 10:35
Last Modified:	19 Aug 2014 10:35
URI:	http://eprints.iisc.ac.in/id/eprint/49582

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