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20 April 2024

» arxiv » 0911.5420

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Field Dependent Superfluid Density in Optimally Doped SmFeAsO_(1-x)F_y
S. Weyeneth ; M. Bendele ; R. Puzniak ; F. Muranyi ; A. Bussmann-Holder ; N. D. Zhigadlo ; S. Katrych ; Z. Bukowski ; J. Karpinski ; A. Shengelaya ; R. Khasanov ; H. Keller ;
Date:	28 Nov 2009
Abstract:	The magnetic field dependence of the in-plane magnetic penetration depth for optimally doped SmFeAsO_(1-x)F_y was investigated by combining torque magnetometry, SQUID magnetometry, and muon-spin rotation. The results obtained from these techniques show all a pronouncedly decreasing superfluid density as the field is increased up to 1 T. This behavior is examined assuming a two-gap scenario where the superfluid density related to the larger gap is field independent and the superfluid density related to the smaller gap is strongly suppressed with increasing magnetic field.
Source:	arXiv, 0911.5420
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