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Title: Calorimetric study of the superconducting and normal state properties of Ca(Fe1−xCox)2As2
Authors: Abdel-Hafiez, M.
Harnagea, L.
Stockert, U.
Wurmehl, S.
Leps, N.
Klingeler, R.
Wolter, A U.B.
Büchner, B.
Dept. of Physics
Keywords: Physics
Issue Date: Sep-2012
Publisher: IOP Publishing
Citation: Journal of Physics: Conference Series, 391, 012120.
Abstract: We present a calorimetric study on single crystals of Ca(Fe1−xCox)2As2 (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 CaFe2As2 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 Tc ~ 14.1 K for Ca(Fe0.937Co0.063)2As2. The phase diagram of Ca(Fe0.937Co0.063)2As2 has been derived and the upper critical field is found to be μ0H(c)2 = 11.5 T and μ0H(ab)c2 = 19.4 T for the c and ab directions, respectively.
ISSN: 1742-6588
Appears in Collections:CONFERENCE PAPERS

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