# Strong pairbreaking in anisotropic superconductors

Title | Strong pairbreaking in anisotropic superconductors |

Publication Type | Journal Article |

Year of Publication | 2010 |

Authors | Kogan VG |

Journal Title | Physical Review B |

Volume | 81 |

Pages | 184528 |

Date Published | 05/01 |

ISBN Number | 1098-0121 |

Accession Number | ISI:000278141800107 |

Keywords | CECOIN5, impurities |

Abstract | Abrikosov-Gor'kov work on pairbreaking in isotropic materials is generalized to anisotropic Fermi surfaces and order parameters. New scaling relations for states with a strong pairbreaking are found for the specific-heat jump Delta C proportional to T-c(3); for the penetration depth that deviates from the zero-T value as Delta lambda = beta T-2 at low temperatures with beta proportional to T-c(-3), and for the slopes of the upper critical fields H-c2'(T-c)proportional to T-c. A remarkably simple relation between these at first sight unrelated quantities is found: Delta C beta T-2(c)4/vertical bar H-c2'vertical bar=phi(0)/16 pi(2) is a universal constant. The predictions are checked on CeCoIn5 and the possibility to apply them to iron-based materials is discussed. |

URL | <Go to ISI>://000278141800107 |

DOI | 10.1103/Physrevb.81.184528 |