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Article
High-Energy Kink Observed in the Electron Dispersion of High-Temperature Cuprate Superconductors
Physical Review Letters (2007)
  • T. Valla
  • Timothy E. Kidd, University of Northern Iowa
  • W.G. Yin
  • G.D. Gu
  • P.D. Johnson
  • Z.H. Pan
  • A.V. Fedorov
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.
Disciplines
Publication Date
April 18, 2007
DOI
http://dx.doi.org/10.1103/PhysRevLett.98.167003
Citation Information
T. Valla, Timothy E. Kidd, W.G. Yin, G.D. Gu, et al.. "High-Energy Kink Observed in the Electron Dispersion of High-Temperature Cuprate Superconductors" Physical Review Letters Vol. 98 Iss. 16 (2007)
Available at: http://works.bepress.com/tim-kidd/26/