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Surface instability and isotopic impurities in quantum solids
E. Cappelluti, G. Rastelli, S. Gaudio +1
In this paper we employ a self-consistent harmonic approximation to investigate surface melting and local melting close to quantum impurities in quantum solids. We show that surfac…
Polaronic features in the optical properties of the Holstein-t-J model
E. Cappelluti, S. Ciuchi, S. Fratini
We derive the exact solution for the optical conductivity of one hole in the Holstein-t-J model in the framework of dynamical mean-field theory (DMFT). We investigate the ma…
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…
Optical properties of the Holstein-t-J model from dynamical mean-field theory
E. Cappelluti, S. Ciuchi, S. Fratini
We employ dynamical mean-field theory to study the optical conductivity of one hole in the Holstein-t-J model. We provide an exact solution for in the limit of infini…
Electron-phonon effects on spin-orbit split bands of two dimensional systems
E. Cappelluti, C. Grimaldi, F. Marsiglio
The electronic self-energy is studied for a two dimensional electron gas coupled to a spin-orbit Rashba field and interacting with dispersionless phonons. For the case of a momentu…