Disorder-induced transition between s(+/-) and s(++) states in two-band superconductors

Описание

Тип публикации: статья из журнала

Год издания: 2011

Идентификатор DOI: 10.1103/PhysRevB.84.180512

Аннотация: We have reexamined the problem of disorder in two-band superconductors, and shown, within the framework of the T-matrix approximation, that the suppression of T-c can be described by a single parameter depending on the intraband and interband impurity scattering rates. T-c is shown to be more robust against nonmagnetic impurities tПоказать полностьюhan would be predicted in the trivial extension of Abrikosov-Gor'kov theory. We find a disorder-induced transition from the s(+/-) state to a gapless and then to a fully gapped s(++) state, controlled by a single parameter-the sign of the average coupling constant (lambda). We argue that this transition has strong implications for experiments.

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Издание

Журнал: PHYSICAL REVIEW B

Выпуск журнала: Vol. 84, Is. 18

ISSN журнала: 10980121

Место издания: COLLEGE PK

Издатель: AMER PHYSICAL SOC

Авторы

  • Efremov D.V. (Max-Planck-Institut fur Festkorperforschung)
  • Dolgov O.V. (Max-Planck-Institut fur Festkorperforschung)
  • Korshunov M.M. (Siberian Federal University)
  • Hirschfeld P.J. (Department of Physics,University of Florida)
  • Golubov A.A. (Faculty of Science and Technology,MESA+ Institute of Nanotechnology,University of Twente)

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