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20 April 2024

» arxiv » 1011.4246

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The superconducting gaps in LiFeAs: Joint study of specific heat and ARPES
U. Stockert ; M. Abdel-Hafiez ; D. V. Evtushinsky ; V. B. Zabolotnyy ; A. U. B. Wolter ; S. Wurmehl ; I. Morozov ; R. Klingeler ; S. V. Borisenko ; B. Büchner ;
Date:	18 Nov 2010
Abstract:	We present specific heat, c_P, and ARPES data on single crystals of the stoichiometric superconductor LiFeAs. A pronounced anomaly is found in c_P at the superconducting transition. The electronic contribution can be described by two s-type energy gaps with magnitudes of approximately Delta1 = 1.2 meV and Delta2 = 2.6 meV and a normal-state gamma coefficient of 10 mJ/mol K^2. All these values are in remarkable agreement with ARPES results.
Source:	arXiv, 1011.4246
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