Nature of tunable hole g factors in quantum dots

We report an electric-field-induced giant modulation of the hole g factor in SiGe nanocrystals. The observed effect is ascribed to a so-far overlooked contribution to the g factor that stems from the mixing between heavy- and light-hole wave functions. We show that the relative displacement between...

Descripción completa

Detalles Bibliográficos
Autores: Ares, N., Golovach, Vitaly N., Katsaros, G., Stoffel, M., Glazman, L. I., Schmidt, O. G., Franceschi, Silvano de
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2013
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/102513
Acceso en línea:http://hdl.handle.net/10261/102513
Access Level:acceso abierto
Descripción
Sumario:We report an electric-field-induced giant modulation of the hole g factor in SiGe nanocrystals. The observed effect is ascribed to a so-far overlooked contribution to the g factor that stems from the mixing between heavy- and light-hole wave functions. We show that the relative displacement between the confined heavy- and light-hole states, occurring upon application of the electric field, alters their mixing strength leading to a strong nonmonotonic modulation of the g factor. © 2013 American Physical Society.

Similares en LA Referencia