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23 April 2024

» pubmed » pmid11736418

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Coherent quasiparticle weight and its connection to high-T(c) superconductivity from angle-resolved photoemission
H Ding ; J R Engelbrecht ; Z Wang ; J C Campuzano ; S C Wang ; H B Yang ; R Rogan ; T Takahashi ; K Kadowaki ; D G Hinks ;
Date:	26 Nov 2001
Journal:	Phys Rev Lett, 87 (22), 227001
Abstract:	We study the doping and temperature dependence of the single-particle coherent weight, z(A), for high- T(c) superconductors Bi(2)Sr(2)CaCu(2)O(8+x) using angle-resolved photoemission. We find that at low temperatures the coherent weight z(A) at (pi,0) is proportional to the carrier concentration x and that the temperature dependence of z(A) is similar to that of the c-axis superfluid density. We show that, for a wide range of carrier concentration, the superconducting transition temperature scales with the product of the low-temperature coherent weight and the maximum superconducting gap.
Source:	PubMed, pmid11736418
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