Theory of the Proximity Effect in Junctions with Unconventional Superconductors

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We present a general theory of the proximity effect in junctions between diffusive normal metals (DN) and superconductors. Various possible symmetry classes in a superconductor are considered: even-frequency spin-singlet even-parity (ESE) state, even-frequency spin-triplet odd-parity state, odd-frequency spin-triplet even-parity (OTE) state and odd-frequency spin-singlet odd-parity state. It is shown that the pair amplitude in a DN belongs, respectively, to an ESE, OTE, OTE, and ESE pairing state since only the even-parity s-wave pairing is possible due to the impurity scattering.
Original languageUndefined
Pages (from-to)037003-
JournalPhysical review letters
Issue number3
Publication statusPublished - 2007


  • METIS-242656
  • IR-59110

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