| Numéro |
J. Phys. Colloques
Volume 39, Numéro C6, Août 1978
The XVth International Conference on low temperature physicsQuantum Fluids and Solids Superconductivity |
|
|---|---|---|
| Page(s) | C6-1390 - C6-1394 | |
| DOI | https://doi.org/10.1051/jphyscol:19786577 | |
The XVth International Conference on low temperature physics
Quantum Fluids and Solids
Superconductivity
J. Phys. Colloques 39 (1978) C6-1390-C6-1394
DOI: 10.1051/jphyscol:19786577
1 Bell Laboratories, Murray Hill, NJ 07974, U.S.A.
2 Department of Applied Physics and Electrical Engineering, Stanford University, CA. 94305, U.S.A.
3 Bell Laboratories, Murray Hill, NJ, 07974, U.S.A.
Quantum Fluids and Solids
Superconductivity
J. Phys. Colloques 39 (1978) C6-1390-C6-1394
DOI: 10.1051/jphyscol:19786577
THE TUNNELING DENSITY OF STATES OF SUPERCONDUCTIVE Nb-Sn
D.F. Moore1, M.R. Beasley2 and J.M. Rowell31 Bell Laboratories, Murray Hill, NJ 07974, U.S.A.
2 Department of Applied Physics and Electrical Engineering, Stanford University, CA. 94305, U.S.A.
3 Bell Laboratories, Murray Hill, NJ, 07974, U.S.A.
Résumé
Nous mesurons les déviations de la densité d'états BCS induites par les phonons à l'aide de jonctions tunnel Pb sur Nb3Sn. L'amplitude globale des déviations décroît mais la forme ne varie pas de façon appréciable pour les compositions allant de 25 % at Sn (haut Tc, fort couplage) à 20 % at Sn (bas Tc, faible couplage).
Abstract
Using Pb on Nb3Sn tunnel junctions we measure the phonon-induced deviations from the BCS density of states. The overall strength of the deviations decreases but the shape does not change appreciably over the composition range from 25 at.% Sn (high Tc, strong-coupling) to 20 at.% Sn (low Tc, weak-coupling).