EFFECT OF HIGH-PRESSURE ON THE PHONON-SPECTRA OF BI2223 IN ANDREEV JUNCTIONS

Authors
SVISTUNOV VM TARENKOV VB DYACHENKO AI AOKI R
Citation
Vm. Svistunov et al., EFFECT OF HIGH-PRESSURE ON THE PHONON-SPECTRA OF BI2223 IN ANDREEV JUNCTIONS, Low temperature physics, 23(11), 1997, pp. 886-888
Citations number
16
Journal title
Low temperature physics → ACNP
ISSN journal
1063777X
Volume
23
Issue
11
Year of publication
1997
Pages
886 - 888
Database
ISI
SICI code
1063-777X(1997)23:11<886:EOHOTP>2.0.ZU;2-A
Abstract
A ''softening'' of the high-frequency modes of the phonon spectrum is detected under pressure. These modes correspond to breathing oxygen mo des and to other vibrational modes of Cu-O. The obtained results expla in the observed increase in the ratio 2 Delta/kT(c) within the framewo rk of the strong electron-phonon interaction model. (C) 1997 American Institute of Physics. [S1063-777X(97)00511-2].