THE INFLUENCE OF PHONONS ON QUANTUM DIFFUSION IN SUPERCONDUCTORS

Authors
REGELMANN T FRITZSCHE A SCHIMMELE L SEEGER A
Citation
T. Regelmann et al., THE INFLUENCE OF PHONONS ON QUANTUM DIFFUSION IN SUPERCONDUCTORS, Hyperfine interactions, 85(1-4), 1994, pp. 97-102
Citations number
16
Categorie Soggetti
Physics, Atomic, Molecular & Chemical","Physics, Nuclear","Physics, Condensed Matter
Journal title
Hyperfine interactions → ACNP
ISSN journal
03043843
Volume
85
Issue
1-4
Year of publication
1994
Pages
97 - 102
Database
ISI
SICI code
0304-3843(1994)85:1-4<97:TIOPOQ>2.0.ZU;2-P
Abstract
The hopping motion of charged light particles coupled to superconducti ng electrons as well as to phonons is investigated within the framewor k of a two-state model. Sufficiently far below the transition temperat ure T(c) the hopping rate is dominated by one-phonon processes if the static energy shifts between the particle ground states are finite but smaller than twice the BCS energy gap. In the opposite limit of large energy asymmetries phonon coupling does not crucially influence the j ump rates. The role of nonlinear lattice coupling is investigated.