EVOLUTION OF THE QUASI-PARTICLE SPECTRAL-FUNCTION IN CUPRATES

Authors
MISRA S GATT R SCHMAUDER T CHUBUKOV AV ONELLION M ZACCHIGNA M VOBORNIK I ZWICK F GRIONI M MARGARITONDO G QUITMANN C KENDZIORA C
Citation
S. Misra et al., EVOLUTION OF THE QUASI-PARTICLE SPECTRAL-FUNCTION IN CUPRATES, Physical review. B, Condensed matter, 58(14), 1998, pp. 8905-8908
Citations number
17
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
58
Issue
14
Year of publication
1998
Pages
8905 - 8908
Database
ISI
SICI code
0163-1829(1998)58:14<8905:EOTQSI>2.0.ZU;2-G
Abstract
We analyzed photoemission data for several doping levels of the Bi2Sr2 CaCu2O8+x compounds, ranging from overdoped to underdoped. We show tha t the high frequency part of the spectra near (0,pi) can be described by Fermi liquid theory in the overdoped regime, but exhibits a non-Fer mi liquid behavior in the underdoped regime. We further demonstrate th at this behavior fits reasonably well to a 1/root omega behavior sugge sted for systems with strong spin fluctuations. [S0163-1829(98)50338-4 ].