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Title: Theoretical study of pressure dependence of transition temperature of In and Pb

Recently proposed structured local pseudopotential (PP) by Fiolhais et al. has been successfully used to compute superconducting state parameters (SSP): electron-phonon coupling strength (λ), Coulomb pseudopotential (μ*), critical temperature (T{sub c}), effective interaction strength (N{sub 0}V), isotopic effect parameter (α) and their pressure dependence of non-transition metals In and Pb as a test case. Pressure dependence of the Debye temperature has been computed by Gruneisen model. Present results are in good agreement with experimental and other theoretical results. Present study has been further extended to estimate volume (critical volume) at which λ=μ*, where Tc and N{sub 0}V becomes zero. The presently used model is found to be transferable at the extreme environment without any adjustment of parameters further alongwith its simplicity and predictivity.
Authors:
 [1] ;  [2] ; ;  [3]
  1. Department of Science, Government Polytechnic, Gandhinagar -382024, Gujarat (India)
  2. Department of Physics, Sardar Patel University, Vallabh Vidyanagar - 388120, Gujarat (India)
  3. Department of Physics, School of Science, Gujarat University, Ahmedabad - 380009, Gujarat (India)
Publication Date:
OSTI Identifier:
22488775
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1675; Journal Issue: 1; Conference: AMRP-2015: 4. national conference on advanced materials and radiation physics, Longowal (India), 13-14 Mar 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; CRITICAL TEMPERATURE; DEBYE TEMPERATURE; ELECTRON-PHONON COUPLING; GRUENEISEN CONSTANT; INDIUM; LEAD; POTENTIALS; PRESSURE DEPENDENCE; SUPERCONDUCTIVITY; SUPERCONDUCTORS; TRANSITION ELEMENTS