JOSEPHSON-COUPLED LAYERED SUPERCONDUCTORS WITH 2 ORDER PARAMETERS .1. UPPER CRITICAL MAGNETIC-FIELD


NAKHMEDOV E., TAHIROV E.

JOURNAL OF PHYSICS-CONDENSED MATTER, cilt.6, ss.2245-2258, 1994 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 6 Konu: 11
  • Basım Tarihi: 1994
  • Doi Numarası: 10.1088/0953-8984/6/11/013
  • Dergi Adı: JOURNAL OF PHYSICS-CONDENSED MATTER
  • Sayfa Sayıları: ss.2245-2258

Özet

By using the Gor'kov-Nambu microscopic theory, an expression for the free-energy functional is obtained for Josephson-coupled layered superconductors with two order parameters corresponding to intra- and interlayer Cooper pairs. The existence of two order parameters in a system leads to the appearance of new terms in the free-energy functional known as the 'Josephson' terms and the Lifshitz invariant. Of these, the Josephson terms characterize the tunnelling of both intra- and interlayer Cooper pairs between neighbouring superconducting sheets.