Ingle, Kapil and Priolkar, K. R. and Pal, Anand and Awana, V. P. S. and Emura, S. (2014) Local structural distortions and their role in superconductivity in SmFeAsO1-xFx superconductors. Superconductor Science and Technology, 27 (7). 075010-1-075010-8. ISSN 0953-2048

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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:	Article
Additional Information:	Copyright for this article belongs to M/S IOP Publishing.
Uncontrolled Keywords:	superconductiviy, EXAFS, iron-based superconductors
Subjects:	Physics
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	19 Oct 2015 07:40
Last Modified:	19 Oct 2015 07:40
URI:	http://npl.csircentral.net/id/eprint/1377

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