Nature of Tunable Hole g Factors in Quantum Dots

N. Ares; V. N. Golovach; Georgios Katsaros; Mathieu Stoffel; F. Fournel; L. I. Glazman; Oliver G. Schmidt; S. De Franceschi

doi:10.1103/PhysRevLett.110.046602

Nature of Tunable Hole g Factors in Quantum Dots

N. Ares, V. N. Golovach, Georgios Katsaros, Mathieu Stoffel, F. Fournel, L. I. Glazman, Oliver G. Schmidt, S. De Franceschi

Department of Semiconductor Physics

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Article number	046602
Pages (from-to)	46602
Number of pages	5
Journal	Physical Review Letters
Volume	110
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.110.046602
Publication status	Published - 2013

Fields of science

103026 Quantum optics
103009 Solid state physics
103 Physics, Astronomy
103011 Semiconductor physics
202018 Semiconductor electronics
210006 Nanotechnology

JKU Focus areas

Nano-, Bio- and Polymer-Systems: From Structure to Function

Access to Document

10.1103/PhysRevLett.110.046602

Cite this

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abstract = "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.",

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AU - Golovach, V. N.

AU - Katsaros, Georgios

AU - Stoffel, Mathieu

AU - Fournel, F.

AU - Glazman, L. I.

AU - Schmidt, Oliver G.

AU - De Franceschi, S.

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AB - 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.

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DO - 10.1103/PhysRevLett.110.046602

M3 - Article

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