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Specific heat of K0.71Na0.29Fe2As2 at very low temperatures

A commercially available calorimeter has been used to investigate the specific heat of a high-quality K0.71Na0.29Fe2As2single crystal. The addenda heat capacity of the calorimeter is determined in the temperature range 0.02K ≤ T ≤. 0.54K. The data of the K0.71Na0.29Fe2As2 crystal imply the presence...

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Main Authors: Reifenberger, Andreas (Author) , Hempel, Marius (Author) , Vogt, p (Author) , Aswartham, S. (Author) , Abdel-Hafiez, M. (Author) , Grinenko, V. (Author) , Wurmehl, S. (Author) , Drechsler, S.-L. (Author) , Fleischmann, Andreas (Author) , Enss, Christian (Author) , Klingeler, Rüdiger (Author)
Format: Article (Journal)
Language:English
Published: 3 April 2014
In: Journal of low temperature physics
Year: 2014, Volume: 175, Issue: 5, Pages: 755-763
ISSN:1573-7357
DOI:10.1007/s10909-014-1168-7
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/s10909-014-1168-7
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Author Notes:A. Reifenberger, M. Hempel, P. Vogt, S. Aswartham, M. Abdel-Hafiez, V. Grinenko, S. Wurmehl, S.-L. Drechsler, A. Fleischmann, C. Enss, R. Klingeler
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Summary:A commercially available calorimeter has been used to investigate the specific heat of a high-quality K0.71Na0.29Fe2As2single crystal. The addenda heat capacity of the calorimeter is determined in the temperature range 0.02K ≤ T ≤. 0.54K. The data of the K0.71Na0.29Fe2As2 crystal imply the presence of a large T2 contribution to the specific heat which gives evidence of d-wave order parameter symmetry in the superconducting state. To improve the measurements, a novel design for a calorimeter with a paramagnetic temperature sensor is presented.
Item Description:Gesehen am 24.08.2020
Im Title sind "0.71", "0.29" und "2" tiefgestellt
Physical Description:Online Resource
ISSN:1573-7357
DOI:10.1007/s10909-014-1168-7

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