Coherent quasiparticle weight and its connection to high-T-c superconductivity from angle-resolved photoemission - art. no. 227001

Citation
H. Ding et al., Coherent quasiparticle weight and its connection to high-T-c superconductivity from angle-resolved photoemission - art. no. 227001, PHYS REV L, 8722(22), 2001, pp. 7001
Citations number
32
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
8722
Issue
22
Year of publication
2001
Database
ISI
SICI code
0031-9007(20011126)8722:22<7001:CQWAIC>2.0.ZU;2-F
Abstract
We study the doping and temperature dependence of the single-particle coher ent weight, z(A), for high-T-c superconductors Bi2Sr2CaCu2O8+x using angle- resolved photoemission. We find that at low temperatures the coherent weigh t z(A) at (pi ,0) is proportional to the carrier concentration x and that t he temperature dependence of z(A) is similar to that of the c-axis superflu id density. We show that, for a wide range of carrier concentration, the su perconducting transition temperature scales with the product of the low-tem perature coherent weight and the maximum superconducting gap.