Faculty Publications

Title

High-energy kink observed in the electron dispersion of high-temperature cuprate superconductors

Document Type

Article

Journal/Book/Conference Title

Physical Review Letters

Volume

98

Issue

16

Abstract

Photoemission studies show the presence of a high-energy anomaly in the observed band dispersion for two families of cuprate superconductors, Bi2Sr2CaCu2O8+δ and La2-xBaxCuO4. The anomaly, which occurs at a binding energy of approximately 340 meV, is found to be anisotropic and relatively weakly doping dependent. Scattering from short range or nearest neighbor spin excitations is found to supply an adequate description of the observed phenomena. © 2007 The American Physical Society.

Original Publication Date

4-18-2007

DOI of published version

10.1103/PhysRevLett.98.167003

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