Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
ELECTRON-LATTICE INTERACTION IN CUPRATES - EFFECT OF ELECTRON CORRELATION
Autore:
ISHIHARA S; EGAMI T; TACHIKI M;
Indirizzi:
UNIV TOKYO,DEPT APPL PHYS TOKYO 103 JAPAN UNIV PENN,DEPT MAT SCI & ENGN PHILADELPHIA PA 19104 UNIV PENN,RES STRUCT MATTER LAB PHILADELPHIA PA 19104 NAGOYA UNIV,DEPT APPL PHYS NAGOYA AICHI 46401 JAPAN TOHOKU UNIV,INST MAT RES SENDAI MIYAGI 980 JAPAN
Titolo Testata:
Physical review. B, Condensed matter
fascicolo: 5, volume: 55, anno: 1997,
pagine: 3163 - 3172
SICI:
0163-1829(1997)55:5<3163:EIIC-E>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
HIGH-TEMPERATURE SUPERCONDUCTORS; HIGH-TC OXIDES; A-B-PLANE; HUBBARD-MODEL; 2-COMPONENT SUPERCONDUCTIVITY; NEUTRON-SCATTERING; YBA2CU3O7; DYNAMICS; SYMMETRY; SYSTEMS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
61
Recensione:
Indirizzi per estratti:
Citazione:
S. Ishihara et al., "ELECTRON-LATTICE INTERACTION IN CUPRATES - EFFECT OF ELECTRON CORRELATION", Physical review. B, Condensed matter, 55(5), 1997, pp. 3163-3172

Abstract

Strong electron-phonon coupling in the cuprates enhanced by electron correlation is suggested by exact diagonalization of a two-band Peierls-Hubbard Hamiltonian in one dimension. To describe the cuprates the band filling was chosen to be about 3/4, and the effect of changing thecopper on-site repulsion and the charge density was examined. The zone-boundary longitudinal optical phonon modes were found to couple verystrongly to holes as a result of charge transfer and changes in the local spin correlation induced by deformation. In particular the oxygenmode was found to soften significantly with doping, in agreement withthe experimental observation. These results suggest strong synergeticeffects of spin-charge-lattice coupling in this system. Implications of these effects to the superconductivity of the cuprates are discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 16/07/20 alle ore 19:02:05