Full-bandwidth Eliashberg theory of superconductivity beyond Migdal's approximation
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DOI: 10.1103/physrevb.102.024503
Abstract: Here, the authors present the first direct, self-consistent solutions of the anisotropic Eliashberg equations for phonon-mediated superconductivity throughout the whole electron energy bandwidth that fully include the first vertex corrections to the electron self-energy. Their… read more here.
Keywords: superconductivity; superconductivity beyond; eliashberg theory; full bandwidth ... See more keywords
Spectral properties and enhanced superconductivity in renormalized Migdal-Eliashberg theory
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DOI: 10.1103/physrevb.103.024520
Abstract: Migdal-Eliashberg theory describes the properties of the normal and superconducting states of electron-phonon-mediated superconductors based on a perturbative treatment of the electron-phonon interactions. It is necessary to include both electron and phonon self-energies self-consistently in… read more here.
Keywords: phonon; eliashberg theory; electron phonon; migdal eliashberg ... See more keywords
Functional-integral approach to Gaussian fluctuations in Eliashberg theory
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DOI: 10.1103/physrevb.104.014513
Abstract: The Eliashberg theory of superconductivity is based on a dynamical electron-phonon interaction as opposed to a static interaction present in BCS theory. The standard derivation of Eliashberg theory is based on an equation of motion… read more here.
Keywords: approach; integral approach; eliashberg theory; functional integral ... See more keywords
Multiband full-bandwidth anisotropic Eliashberg theory of interfacial electron-phonon coupling and high - T c superconductivity in FeSe /SrTiO 3
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DOI: 10.1103/physrevb.97.060501
Abstract: We examine the impact of interfacial phonons on the superconducting state of FeSe/SrTiO3 developing a material's specific multiband, full bandwidth, and anisotropic Eliashberg theory for this syste ... read more here.
Keywords: anisotropic eliashberg; eliashberg theory; bandwidth anisotropic; full bandwidth ... See more keywords