191 citations · 1.9k across the 58 of their papers we have counts for
9 papers · 1 filter
Collapse of the low temperature insulating state in Cr-doped VO thin films
Pía Homm, Leander Dillemans, Mariela Menghini +10
We have grown epitaxial Cr-doped VO thin films with Cr concentrations between and on -AlO by oxygen-assisted molecular beam epitaxy. For the high…
An electric-field driven Mott metal-insulator transition in correlated thin films: an inhomogeneous dynamical mean-field theory approach
Petar Bakalov, Davoud Nasr Esfahani, Lucian Covaci +3
Simulations are carried out based on the dynamical mean-field theory (DMFT) in order to investigate the properties of correlated thin films for various values of the chemical poten…
Non-linear response to electric field in extended Hubbard models
D. Nasr Esfahani, L. Covaci, F. M. Peeters
The electric-field response of a one-dimensional ring of interacting fermions, where the interactions are described by the extended Hubbard model, is investigated. By using an accu…
Field effect on surface states in a doped Mott-Insulator thin film
D. Nasr Esfahani, L. Covaci, F. M. Peeters
Surface effects of a doped thin film made of a strongly correlated material are investigated both in the absence and presence of a perpendicular electric field. We use an inhomogen…
Impact of Dresselhaus vs. Rashba spin-orbit coupling on the Holstein polaron
Zhou Li, L. Covaci, F. Marsiglio
We utilize an exact variational numerical procedure to calculate the ground state properties of a polaron in the presence of Rashba and linear Dresselhaus spin-orbit coupling. We f…
Electrical field induced shift of the Mott Metal-Insulator transition in thin films
D. Nasr Esfahani, L. Covaci, F. M. Peeters
The ground state properties of a paramagnetic Mott insulator are investigated in the presence of an external electrical field using the inhomogeneous Gutzwiller approximation for a…
Impact of spin-orbit coupling on the Holstein polaron
Zhou Li, L. Covaci, M. Berciu +2
We utilize an exact variational numerical procedure to calculate the ground state properties of a polaron in the presence of a Rashba-like spin orbit interaction. Our results corro…
Polaron formation in the presence of Rashba spin-orbit coupling: implications for spintronics
Lucian Covaci, Mona Berciu
We study the effects of the Rashba spin-orbit coupling on the polaron formation, using a suitable generalization of the Momentum Average approximation. Contrary to previous investi…
Survival of the Dirac points in rippled graphene
Lucian Covaci, Mona Berciu
We study the effects of the rippling of the graphene sheet on the quasiparticle dispersion. This is achieved using a generalization to the honeycomb lattice of the Momentum Average…