Fermi-edge singularities in linear and non-linear ultrafast spectroscopy

Simple item page
dc.creatorPorras, D.
dc.creatorFernandez-Rossier, J.
dc.creatorTejedor, C.
dc.date2000-09-11
dc.date2001-02-15
dc.date.accessioned2026-07-07T08:39:16Z
dc.date.available2026-07-07T08:39:16Z
dc.descriptionWe discuss Fermi-edge singularity effects on the linear and nonlinear transient response of an electron gas in a doped semiconductor. We use a bosonization scheme to describe the low energy excitations, which allows to compute the time and temperature dependence of the response functions. Coherent control of the energy absorption at resonance is analyzed in the linear regime. It is shown that a phase-shift appears in the coherent control oscillations, which is not present in the excitonic case. The nonlinear response is calculated analytically and used to predict that four wave-mixing experiments would present a Fermi-edge singularity when the exciting energy is varied. A new dephasing mechanism is predicted in doped samples that depends linearly on temperature and is produced by the low-energy bosonic excitations in the conduction band.
dc.descriptionlong version; 9 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0009156
dc.identifierhttp://arxiv.org/abs/cond-mat/0009156
dc.identifierPhys. Rev. B 63, 245321 (2001)
dc.identifierdoi:10.1103/PhysRevB.63.245321
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/141015
dc.subjectMesoscale and Nanoscale Physics
dc.titleFermi-edge singularities in linear and non-linear ultrafast spectroscopy
dc.typetext

Files

Collections

arXiv