22 citations · 65 across the 4 of their papers we have counts for
4 papers
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…
Giant proximity effect in a phase-fluctuating superconductor
D. Marchand, L. Covaci, M. Berciu +1
When a tunneling barrier between two superconductors is formed by a normal material that would be a superconductor in the absence of phase fluctuations, the resulting Josephson eff…
Holstein polaron: the effect of multiple phonon modes
Lucian Covaci, Mona Berciu
We generalize the Momentum Average approximations MA and MA to study the effects of coupling to multiple optical phonons on the properties of a Holstein polaron. As…
Quantum mechanics of spin transfer in coupled electron-spin chains
Wonkee Kim, L. Covaci, F. Dogan +1
The manner in which spin-polarized electrons interact with a magnetized thin film is currently described by a semi-classical approach. This in turn provides our present understandi…