147 citations · 194 across the 3 of their papers we have counts for
7 papers
Band structure and insulating states driven by the Coulomb interaction in twisted bilayer graphene
Tommaso Cea, Francisco Guinea
We analyze the phase diagram of twisted graphene bilayers near a magic angle. We consider the effect of the long range Coulomb interaction, treated within the self consistent Hartr…
Large-scale critical behavior of the rippling phase transition for graphene membranes
Tommaso Cea, Miguel Ruiz-Garcia, Luis Bonilla +1
We analyze the spontaneous rippling of graphene membranes as function of the coupling between lattice deformations and electrons. We numerically study a model of an elastic membran…
A numerical study of the rippling instability driven by electron-phonon coupling in graphene
Tommaso Cea, Miguel Ruiz-Garcia, Luis Bonilla +1
Suspended graphene exhibits ripples of size ranging from 50 to 100 Å and height 10Å, however, their origin remains undetermined. Previous theoretical works have proposed that…
Theory of coherent oscillations detection in THz pump-probe spectroscopy: from phonons to electronic collective modes
Mattia Udina, Tommaso Cea, Lara Benfatto
Time-resolved spectroscopies using intense THz pulses appear as a promising tool to address collective electronic excitations in condensed matter. In particular recent experiments…
Electronic band structure and pinning of Fermi energy to van Hove singularities in twisted bilayer graphene: a self consistent approach
Tommaso Cea, Niels R. Walet, Francisco Guinea
The emergence of flat bands in twisted bilayer graphene leads to an enhancement of interaction effects, and thus to insulating and superconducting phases at low temperatures, even…
Twists and The Electronic Structure of Graphitic Materials
Tommaso Cea, Niels R. Walet, Francisco Guinea
We analyze the effect of twists on the electronic structure of configurations of infinite stacks of graphene layers. We focus on three different cases: an infinite stack where each…