THE SIGN OF INTERBAND INTERACTION AND STABILITY OF THE SUPERCONDUCTING GROUND-STATE IN THE MULTIBAND MODEL

Authors
KRISTOFFEL N ORD T KONSIN P
Citation
N. Kristoffel et al., THE SIGN OF INTERBAND INTERACTION AND STABILITY OF THE SUPERCONDUCTING GROUND-STATE IN THE MULTIBAND MODEL, Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics, 16(3), 1994, pp. 311-314
Citations number
12
Categorie Soggetti
Physics
Journal title
Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics → ACNP
ISSN journal
03926737
Volume
16
Issue
3
Year of publication
1994
Pages
311 - 314
Database
ISI
SICI code
0392-6737(1994)16:3<311:TSOIIA>2.0.ZU;2-Q
Abstract
It is stressed that the stability of the superconducting ground state in the two-band model is guaranteed for both signs of the leading inte rband interaction W. Thereby the requirement for the energy minimum fi xes the phase differences of two order parameters as \phi1 - phi2\ = 0 , 2pi, ... if W < 0 and \phi1 - phi2\ = pi, 3pi, ... if W > 0, and thi s difference is reflected in the ground-state wave function.