BackBrowsing INVESTIGACIÓN by Subject "PHYSICS, CONDENSED MATTER"
Now showing items 21-26 of 26
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Position-dependent exact-exchange energy for slabs and semi-infinite jellium
Horowitz, Claudio M.; Constantin, Lucian A.; Proetto, C. R.; Pitarke de la Torre, José María
(American Physical Society, 2009-12)
The position-dependent exact-exchange energy per particle epsilon(x)(z) (defined as the interaction between a given electron at z and its exact-exchange hole) at metal surfaces is investigated, by using either jellium slabs ... -
Pumped double quantum dot with spin-orbit coupling
(Springer, 2011-03)We study driven by an external electric field quantum orbital and spin dynamics of electron in a one-dimensional double quantum dot with spin-orbit coupling. Two types of external perturbation are considered: a periodic ... -
Role of occupied d bands in the dynamics of excited electrons and holes in Ag
; Pitarke de la Torre, José María; ; ; (American Physical Society, 2003)
The role that occupied d bands play in the inelastic lifetime of bulk and surface states in Ag is investigated from the knowledge of the quasiparticle self-energy. In the case of bulk electrons, sp bands are taken to be ... -
Role of occupied d states in the relaxation of hot electrons in Au
Campillo Santos, Igor; Pitarke de la Torre, José María; Rubio, A.; Echenique Landiribar, Pedro Miguel (American Physical Society, 2000-07-15)
We present first-principles calculations of electron-electron scattering rates of low-energy electrons in Au. Our full band-structure calculations indicate that a major contribution from occupied d states participating in ... -
Upconversion cooling of Er-doped low-phonon fluorescent solids
García Adeva, Angel Javier; Balda de la Cruz, Rolindes ; Fernández Rodríguez, Joaquín Manuel (American Physical Society, 2009-01)
We report on a novel mechanism for laser cooling of fluorescent solids based on infrared-to-visible upconversion often found in rare-earth-doped low-phonon materials. This type of optical cooling presents some advantages ... -
Wheel-rail wear index prediction considering multiple contact patches
Santamaría Manrique, Javier; García Vadillo, Ernesto ; Oyarzabal de Celis, Olatz (Elsevier, 2009-06)
This paper shows a new wheel-rail contact model specially suited to obtain wear indexes between wheel and rail when the vehicle negotiates tight curves. The model presented in the paper enables introduction of the two ...