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11 October 2017 Phonon-induced superconductivity in a self-consistent Hubbard model (Conference Presentation)
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We have studied an infinite Hubbard chain with a spin-orbit coupling term, submitted to a uniform magnetic field as well as local phonons. By means of a Lang-Firsov transformation, we show that an effective interacting fermion model emerges. Moreover, a self-consistent mean-field theory of this model, formulated in terms of thermal Green's functions, shows that a BCS term emerges, thus leading to a superconducting phase transition at zero temperature. We find analytical expressions for the phase boundary, that agree well with exact numerical diagonalization of the Hamiltonian.
Conference Presentation
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Enrique Munoz, Edson Vernek, and Victor Apel "Phonon-induced superconductivity in a self-consistent Hubbard model (Conference Presentation)", Proc. SPIE 10357, Spintronics X, 103571L (11 October 2017);

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