Controlled Creation of Structural Defects in the Heavy Fermion Superconductor UPt3 and Its Influence on the Superconducting Properties |
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| Authors: | H Suderow S Kambe J P Brison A Huxley J Flouquet F Rullier-Albenque |
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| Affiliation: | (1) Départment de Recherche Fondamentale sur la Matière Condensée, SPSMS, 17 Rue des Martyrs, 38054 Grenoble Cedex 9, France;(2) Centre des Recherches sur les Très Basses Températures, CNRS, BP 166, 38042 Grenoble Cedex 9, France;(3) Laboratorio de Bajas Temperaturas, Departamento de Física de la Materia Condensada, C-III, Universidad Autonoma de Madrid, 28049 Madrid, Spain;(4) Laboratoire des Solides Irradiés, Ecole Polytechnique, CEA, 91128 Palaiseau, Cedex |
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| Abstract: | The superconducting properties of the heavy fermion UPt
3
have been changed by irradiation with high energy electrons which creates point defects in a reproducible and controled way. Measurements of the residual resistivity, critical temperature, upper critical field and thermal conductivity have been realized on these irradiated samples. The strong suppresion of superconductivity with increasing defect concentration is in agreement with the theory of unconventional superconductivity. However, our thermal conductivity data contradicts the simple predictions derived from the most popular modelsE
1g
and E
2u) of the superconducting order parameter in UPt
3
. |
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