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Article
Fine Details of the Nodal Electronic Excitations in Bi2Sr2CaCu2O8+δ
Physical Review B (2005)
  • T. Valla
  • Timothy E. Kidd, University of Northern Iowa
  • J.D. Rameau
  • H.J. Noh
  • G.D. Gu
  • P.D. Johnson
  • H.B. Yang
  • H. Ding
Abstract
Very high energy resolution photoemission experiments on high quality samples of optimally doped Bi2Sr2CaCu2O8+δ show new features in the low-energy electronic excitations. A marked change in the binding energy and temperature dependence of the near-nodal scattering rates is observed near the superconducting transition temperature, TC. The temperature slope of the scattering rate measured at low energy shows a discontinuity at TC. In the superconducting state, coherent excitations are found with the scattering rates showing a cubic dependence on frequency and temperature. The superconducting gap has a d-wave magnitude with negligible contribution from higher harmonics. Further, the bilayer splitting has been found to be finite at the nodal point.
Disciplines
Publication Date
December 28, 2005
DOI
http://dx.doi.org/10.1103/PhysRevB.73.184518
Citation Information
T. Valla, Timothy E. Kidd, J.D. Rameau, H.J. Noh, et al.. "Fine Details of the Nodal Electronic Excitations in Bi2Sr2CaCu2O8+δ" Physical Review B Vol. 73 Iss. 18 (2005)
Available at: http://works.bepress.com/tim-kidd/27/