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Title: Origin of doping dependence of transition temperature of La2- xBaxCuO4 in Van Hove singularity scenario
Authors: Shareef, Shahryar
Shamsuzzaman, A M
Naqib, S H
Islam, A K M A
Issue Date: Feb-1999
Publisher: NISCAIR-CSIR, India
Abstract: The influence of some intrinsic parameters (e.g., Fermi level shift from the Van Hove singularity (VHs), electron-phonon coupling parameter, normalised density of states) on the variation of transition temperature (Tc) with doping for high temperature cuprate superconductors La2- xBaxCuO4 have been examined in the VHs scenario. The Tc -equation for high temperature cuprate superconductors has been utilized to determine the doping derivative of electronic density of states and Debye temperature in the VHs. The doping derivatives of transition temperature, which represent the variation of Tc on doping, have been determined theoretically and compared with that obtained from the experimental transition temperature versus doping curve.
Page(s): 159-162
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.37(02) [February 1999]

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