Electrons and Phonons in High Temperature Superconductors

The defect-induced anharmonic phonon-electron problem in high-temperature superconductors has been investigated with the help of double time thermodynamic electron and phonon Green’s function theory using a comprehensive Hamiltonian which includes the contribution due to unperturbed electrons and ph...

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Bibliographic Details
Published inJournal of materials Vol. 2013; no. 2013; pp. 1 - 4
Main Authors Singh, Anu, Singh, Hempal, Ashokan, Vinod, Indu, B. D.
Format Journal Article
LanguageEnglish
Published Cairo, Egypt Hindawi Puplishing Corporation 14.02.2013
Hindawi Publishing Corporation
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Summary:The defect-induced anharmonic phonon-electron problem in high-temperature superconductors has been investigated with the help of double time thermodynamic electron and phonon Green’s function theory using a comprehensive Hamiltonian which includes the contribution due to unperturbed electrons and phonons, anharmonic phonons, impurities, and interactions of electrons and phonons. This formulation enables one to resolve the problem of electronic heat transport and equilibrium phenomenon in high-temperature superconductors in an amicable way. The problem of electronic heat capacity and electron-phonon problem has been taken up with special reference to the anharmonicity, defect concentration electron-phonon coupling, and temperature dependence.
ISSN:2314-4866
2314-4874
DOI:10.1155/2013/605929