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4 papers · 2 filters
Prediction of a native ferroelectric metal
Alessio Filippetti, Vincenzo Fiorentini, Francesco Ricci +2
The possibility that metals may support ferroelectricity is an open issue. Anderson and Blount showed that certain martensitic transitions involve inversion symmetry breaking and t…
Temperature evolution of the band-gap in BiFeO3 traced by resonant Raman scattering
Mads Christof Weber, Mael Guennou, Constance Toulouse +4
Knowledge of the electronic band structure of multiferroic oxides, crucial for the understanding and tuning of photo-induced effects, remains very limited even in the model and tho…
Velocity renormalization and Dirac cone multiplication in graphene superlattices with various barrier edge geometries
Albert de Jamblinne de Meux, Nicolas Leconte, Jean-Christophe Charlier +1
The electronic properties of one-dimensional graphene superlattices strongly depend on the atomic size and orientation of the 1D external periodic potential. Using a tight-binding…
Dynamical and anharmonic effects on the electron-phonon coupling and the zero-point renormalization of the electronic structure
Gabriel Antonius, Samuel Poncé, Étienne Lantagne-Hurtubise +3
The renormalization of the band structure at zero temperature due to electron-phonon coupling is investigated in diamond, BN, LiF and MgO crystals. We implement a dynamical scheme…