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 AMPC  Vol.2 No.4 , December 2012
Theory of Electron Density of States of High Temperature Impurity Induced Anharmonic Superconductors
Abstract: The expression for the electron density of states (EDOS) of high temperature superconductors (HTS) has been derived taking the disorder and anharmonicity effects as a central problem. This has been dealt with the help of double time thermodynamic Green’s function theory for electrons via a generalized Hamiltonian which consists of the contribution due to 1) unperturbed electrons; 2) unperturbed phonons; 3) isotopic impurities; 4) anharmonicities (no BCS type Hamiltonian has been taken up in the formulation); and 5) electron-phonon interactions. The renormalization effects and emergence of pairons appears as a unique feature of the theory and dependence of EDOS on impurity concentration and temperature has been discussed in details with special reference to the HTS.
Cite this paper: H. Singh, A. Singh, V. Ashokan and B. Indu, "Theory of Electron Density of States of High Temperature Impurity Induced Anharmonic Superconductors," Advances in Materials Physics and Chemistry, Vol. 2 No. 4, 2012, pp. 249-254. doi: 10.4236/ampc.2012.24037.
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