Wannier-Stark resonances in semiconductor superlattices
نویسندگان
چکیده
منابع مشابه
Bloch oscillations and Wannier Stark Ladder study in Semiconductor Superlattices
Président du jury : François JULIEN Directeur de Recherches(HDR), IEF – Univ. Paris Sud Rapporteurs : Olivier GAUTHIER-LAFAYE Chargé de Recherches(HDR), LAASUniv. Paul Sabatier Dominique COQUILLAT Directeur de Recherches(HDR), L2C –Univ. Montpellier 2 Examinateurs : Robson FERREIRA Directeur de Recherches(HDR), LPA – ENS de Paris Bloch oscillations and Wannier Stark Ladder study in Semiconducto...
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Ever since the initial applications of quantum mechanics to the dynamics of electrons in solids, the analysis of Bloch electrons moving in a homogeneous electric field has been of central importance. By employing semiclassical arguments, in 1928 Bloch [1] demonstrated that, a wave packet given by a superposition of single-band states peaked about some quasimomentum, h̄k, moves with a group veloc...
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The resonance spectrum of a tilted periodic quantum system for a bichromatic periodic potential is investigated. For such a bichromatic Wannier–Stark system, exceptional points, degeneracies of the spectrum, can be localized in parameter space by means of an efficient method for computing resonances. Berry phases and Petermann factors are analysed. Finally, the influence of a nonlinearity of th...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2002
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.65.115302