Temperature and doping dependence of high-energy kink in cuprates

It is shown that spectral functions within the extended t-J model, evaluated using the finite-temperature diagonalization of small clusters, exhibit the high-energy kink in single-particle dispersion consistent with recent angle-resolved photoemission results on hole-doped cuprates. The kink and wat...

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Bibliographic Details
Published in:arXiv.org 2007-06
Main Authors: Zemljic, M M, Prelovsek, P, Tohyama, T
Format: Article
Language:English
Subjects:
Cuprates
Doping
Photoelectric emission
Temperature dependence
Online Access:Get full text
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Summary:It is shown that spectral functions within the extended t-J model, evaluated using the finite-temperature diagonalization of small clusters, exhibit the high-energy kink in single-particle dispersion consistent with recent angle-resolved photoemission results on hole-doped cuprates. The kink and waterfall-like features persist up to large doping and to temperatures beyond \(J\) hence the origin can be generally attributed to strong correlations and incoherent hole propagation at large binding energies. In contrast, our analysis predicts that electron-doped cuprates do not exhibit these phenomena in photoemission.
ISSN:2331-8422
DOI:10.48550/arxiv.0706.1156