skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Fine Details of the Nodal Electronic Excitations in Bi2Sr2CaCu2O8+gamma

Abstract

Very high energy resolution photoemission experiments on high quality samples of optimally doped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} 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, T{sub C}. 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.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL) National Synchrotron Light Source
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
913982
Report Number(s):
BNL-78550-2007-JA
Journal ID: ISSN 0163-1829; PRBMDO; TRN: US0801449
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys. Rev. B; Journal Volume: 73
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BINDING ENERGY; ENERGY RESOLUTION; HARMONICS; PHOTOEMISSION; SCATTERING; TEMPERATURE DEPENDENCE; TRANSITION TEMPERATURE; NSLS; national synchrotron light source

Citation Formats

Valla,T., Kidd, T., Rameau, J., Noh, H., Gu, G., Johnson, P., Yang, H., and Ding, H. Fine Details of the Nodal Electronic Excitations in Bi2Sr2CaCu2O8+gamma. United States: N. p., 2006. Web. doi:10.1103/PhysRevB.73.184518.
Valla,T., Kidd, T., Rameau, J., Noh, H., Gu, G., Johnson, P., Yang, H., & Ding, H. Fine Details of the Nodal Electronic Excitations in Bi2Sr2CaCu2O8+gamma. United States. doi:10.1103/PhysRevB.73.184518.
Valla,T., Kidd, T., Rameau, J., Noh, H., Gu, G., Johnson, P., Yang, H., and Ding, H. Sun . "Fine Details of the Nodal Electronic Excitations in Bi2Sr2CaCu2O8+gamma". United States. doi:10.1103/PhysRevB.73.184518.
@article{osti_913982,
title = {Fine Details of the Nodal Electronic Excitations in Bi2Sr2CaCu2O8+gamma},
author = {Valla,T. and Kidd, T. and Rameau, J. and Noh, H. and Gu, G. and Johnson, P. and Yang, H. and Ding, H.},
abstractNote = {Very high energy resolution photoemission experiments on high quality samples of optimally doped Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} 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, T{sub C}. 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.},
doi = {10.1103/PhysRevB.73.184518},
journal = {Phys. Rev. B},
number = ,
volume = 73,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}