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25 April 2024

» arxiv » cond-mat/0404385

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Momentum anisotropy of the scattering rate in cuprate superconductors
A. Kaminski ; H. M. Fretwell ; M. R. Norman ; M. Randeria ; S. Rosenkranz ; J. C. Campuzano ; J. Mesot ; T. Sato ; T. Takahashi ; T. Terashima ; M. Takano ; K. Kadowaki ; Z. Z. Li ; H. Raffy ;
Date:	16 Apr 2004
Subject:	Strongly Correlated Electrons; Superconductivity \| cond-mat.str-el cond-mat.supr-con
Abstract:	We examine the momentum and energy dependence of the scattering rate of the high temperature cuprate superconductors using angle resolved photoemission spectroscopy. The scattering rate is of the form a + b*w. The inelastic coefficient b is found to be isotropic. The elastic term, a, however, is found to be highly anisotropic in the pseudogap phase of optimal doped samples, with an anisotropy which correlates with that of the pseudogap. This can be contrasted with heavily overdoped samples, which show an isotropic scattering rate in the normal state.
Source:	arXiv, cond-mat/0404385
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