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Temperature and Doping Dependence of the High-Energy Kink in Cuprates

Temperature and Doping Dependence of the 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 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review Letters American Physical Society (APS)

Temperature and Doping Dependence of the High-Energy Kink in Cuprates

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References (2)

Publisher
American Physical Society (APS)
Copyright
Copyright © 2008 The American Physical Society
ISSN
1079-7114
DOI
10.1103/PhysRevLett.100.036402
pmid
18233012
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

Physical Review LettersAmerican Physical Society (APS)

Published: Jan 25, 2008

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