| Numéro |
J. Phys. I France
Volume 2, Numéro 5, May 1992
|
|
|---|---|---|
| Page(s) | 517 - 522 | |
| DOI | https://doi.org/10.1051/jp1:1992162 | |
DOI: 10.1051/jp1:1992162
J. Phys. I France 2 (1992) 517-522
1 UCLA, Department of Physics, Los Angeles, CA 90024, U.S.A.
2 Academy of Sciences, 142432 Chernogolovka, Moscow, Russia
© Les Editions de Physique 1992
J. Phys. I France 2 (1992) 517-522
Conductivity coherence peak in YBa 2Cu 3O 7
O. Klein1, K. Holczer1, G. Grüner1 and G.A. Emelchenko21 UCLA, Department of Physics, Los Angeles, CA 90024, U.S.A.
2 Academy of Sciences, 142432 Chernogolovka, Moscow, Russia
(Received 20 January 1992, accepted in final form 6 March 1992)
Abstract
We have measured both the surface resistance
and the surface reactance
of a YBa
2Cu
3O
7 single crystal at millimeter wave frequencies and have evaluated the conductivity
. We observe a narrow coherence peak below
which indicates s-wave pairing with a rapid opening of the single particle gap.
© Les Editions de Physique 1992