ABOVE TC PHONON RENORMALIZATION IN LA1.85SR0.15CUO4

Authors
YAGIL Y SALJE EKH
Citation
Y. Yagil et Ekh. Salje, ABOVE TC PHONON RENORMALIZATION IN LA1.85SR0.15CUO4, Physica. C, Superconductivity, 229(1-2), 1994, pp. 152-156
Citations number
27
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
229
Issue
1-2
Year of publication
1994
Pages
152 - 156
Database
ISI
SICI code
0921-4534(1994)229:1-2<152:ATPRIL>2.0.ZU;2-P
Abstract
FIR spectroscopy measurements on La1.85Sr0.15CuO4 (LSCO) samples indic ate phonon renormalization at temperatures well above the superconduct ing transition temperature T(c). These are in good correlation with sp in-lattice relaxation time measurements of LSCO, and in accord with ot her high-T(c) compounds. The possibility of a (pseudo) spin gap and of the existence of bipolarons are discussed.