Description

2009/10/16, Dr. Marina Semina, Ioffe Physico-Technical Institute, RAS, St.-Petersburg, Russia

Place: Sala de Seminarios del Departamento de Física Teórica e Historia de la Ciencia
Time: 12h.
Title: Localization of electron-hole complexes in quantum semiconductorstructures

Abstract
Semiconductor nanostructures such as quantum wells and quantum wires contain inevitable interface roughnesses at the interfaces, which strongly affect optically excited electron-hole complexes, including excitons and trions. The effect of localization of these complexes at fluctuations of quantum well width or quantum wire radius is studied by the variational method. The efficient and physically justified trial functions are suggested. Their applicability is illustrated for some model cases, a brief comparison with available experimental data is carried out.