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Collective excitations and universal broadening of cyclotron absorption in Dirac semimetals in a quantizing magnetic field
D. I. Yasnov, A. P. Protogenov, P. M. Echenique +1
The spectrum of electromagnetic collective excitations in Dirac semimetals placed in a quantizing magnetic field is considered. We have found the Landau damping regions using the e…
Quantum friction between oscillating crystal slabs: Graphene monolayers on dielectric substrates
Vito Despoja, Pedro M. Echenique, Marijan Sunjic
We present a theoretical description of energy transfer processes between two noncontact quasi- twodimensional crystals separated by distance a, oscillating with frequency omega0 a…
Resolubility of Image-Potential Resonances
Ulrich Höfer, Pedro M. Echenique
A theory of image-potential states is presented for the general case where these surface electronic states are resonant with a bulk continuum. The theory extends the multiple scatt…
One-Dimensional Potential Model for Image States on Free-Standing Graphene
P. L. de Andres, P. M. Echenique, A. Rivacoba
In the framework of the non-local dielectric theory the static non-local self-energy of an electron near an ultra-thin polarizable layer has been calculated and applied to study im…
Quasiparticles for quantum dot array in graphene and the associated Magnetoplasmons
Oleg L. Berman, Godfrey Gumbs, P. M. Echenique
We calculate the low-frequency magnetoplasmon excitation spectrum for a square array of quantum dots on a two-dimensional (2D) graphene layer. The confining potential is linear in…
Nonlinear screening and stopping power in two-dimensional electron gases
E. Zaremba, I. Nagy, P. M. Echenique
We have used density functional theory to study the nonlinear screening properties of a two-dimensional (2D) electron gas. In particular, we consider the screening of an external s…