Physical Characterization of the Heavy Fermion Superconducting Noncentrosymmetric CePt3Si System and its Variants
نویسنده
چکیده
The CePt3Si system has recently been reported as the only heavy fermion system with a lack of inversion symmetry in the crystal structure to display superconducting properties. This discovery is in partial disagreement with the traditional Bardeen-Cooper-Schrieffer (BCS) theory of superconductors, which involves electron phonon mediated pairing. The previously published data, January 2004, reported a fairly broad phase transition into the superconducting region as well as at the Curie temperature. The data fit showed a finite value of C/T at temperature equal to zero Kelvin. Explored here are correlations between physical properties and stoichiometery, as well as doping effects on the system.
منابع مشابه
Heavy fermion superconductivity and magnetic order in noncentrosymmetric CePt3Si.
CePt3Si is a novel heavy fermion superconductor, crystallizing in the CePt3B structure as a tetragonally distorted low symmetry variant of the AuCu3 structure type. CePt3Si exhibits antiferromagnetic order at T(N) approximately 2.2 K and enters into a heavy fermion superconducting state at T(c) approximately 0.75 K. Large values of H(')(c2) approximately -8.5 T/K and H(c2)(0) approximately 5 T ...
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