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  Calorimetric study of the superconducting and normal state properties of Ca(Fe1-xCox)2As2

Abdel-Hafiez, M., Harnagea, L., Singh, S., Stockert, U., Wurmehl, S., Leps, N., et al. (2012). Calorimetric study of the superconducting and normal state properties of Ca(Fe1-xCox)2As2. Journal of Physics: Conference Series, 391(1): 012120, pp. 1-6. doi:10.1088/1742-6596/391/1/012120.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-2099-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-4F05-3
Genre: Journal Article

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 Creators:
Abdel-Hafiez, M., Author
Harnagea, L., Author
Singh, S.1, Author              
Stockert, U.2, Author              
Wurmehl, S., Author
Leps, N., Author
Klingeler, R., Author
Wolter, A. U. B., Author
Büchner, B., Author
Affiliations:
1Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              

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 Abstract: We present a calorimetric study on single crystals of Ca(Fe 1− x Co x ) 2 As 2 ( x = 0, 0.032, 0.051, 0.056, 0.063, and 0.146). The combined first order spin-density wave/structural transition occurs in the parent CaFe 2 As 2 compound at 168 K and gradually shifts to lower temperature for low doping levels ( x = 0.032 and x = 0.051). It is completely suppressed upon higher doping x ≥ 0.056. Simultaneously, superconductivity appears at lower temperature with a transition temperature around T c ~ 14.1 K for Ca(Fe 0.937 Co 0.063 ) 2 As 2 . The phase diagram of Ca(Fe 0.937 Co 0.063 ) 2 As 2 has been derived and the upper critical field is found to be μ 0 H ( c ) 2 = 11.5 T and μ 0 H (ab) c 2 = 19.4 T for the c and ab directions, respectively.

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Language(s): eng - English
 Dates: 2012-10-30
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Method: -
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Title: Journal of Physics: Conference Series
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 391 (1) Sequence Number: 012120 Start / End Page: 1 - 6 Identifier: ISSN: 1742-6588
CoNE: https://pure.mpg.de/cone/journals/resource/111097776606042