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Scaling of the Fano effect of the in-plane Fe-As phonon and the superconducting critical temperature in BaKFeAs
B. Xu, E. Cappelluti, L. Benfatto +11
By means of infrared spectroscopy we determine the temperature-doping phase diagram of the Fano effect for the in-plane Fe-As stretching mode in BaKFeAs.…
Interactions and superconductivity in heavily doped MoS2
R. Roldan, E. Cappelluti, F. Guinea
We analyze the microscopic origin and the physical properties of the superconducting phase recently observed in MoS. We show how the combination of the valley structure of the…
Extended Drude model and role of interband transitions in the mid-infrared spectra of pnictides
L. Benfatto, E. Cappelluti, L. Ortenzi +1
We analyze the outcomes of an extended-Drude-model approach to the optical spectra of pnictides, where the multiband nature of the electronic excitations requires a careful analysi…
Effects of Fermi-surface shrinking on the optical sum rule in pnictides
L. Benfatto, E. Cappelluti
In this paper we investigate the effects of the band shifts induced by the interband spin-fluctuation coupling on the optical sum rule in pnictides. We show that, despite the shrin…
Fermi surface shrinking and interband coupling in iron-based pnictides
L. Ortenzi, E. Cappelluti, L. Benfatto +1
Recent measurements of Fermi surface with de Haas-van Alphen oscillations in LaFePO showed a shrinking of the Fermi pockets with respect to first-principle LDA calculations, sugges…
Strong-coupling properties of unbalanced Eliashberg superconductors
E. Cappelluti, G. A. Ummarino
In this paper we investigate the thermodynamical properties of ``unbalanced'' superconductors, namely, systems where the electron-boson coupling is different in the self-energy…