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Nature of tunable hole g factors in quantum dots

AuthorsAres, N.; Golovach, V. N.; Katsaros, G.; Katsaros, G.; Stoffel, M.; Glazman, L. I.; Schmidt, O. G.; Franceschi, S. de
Issue Date2013
PublisherAmerican Physical Society
CitationPhysical Review Letters 110: 046602 (2013)
AbstractWe 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.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.110.046602
Identifiersdoi: 10.1103/PhysRevLett.110.046602
issn: 0031-9007
e-issn: 1079-7114
Appears in Collections:(CFM) Artículos
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