Electron and Nuclear Spin Interactions in the Optical Spectra of Single GaAs Quantum Dots

Published

May 1, 2001

Author(s)

R W. Gammon, A L. Efros, T A. Kennedy, M Rosen, D S. Katzer, D Park, Steven W. Brown, V L. Korenev, I A. Merkulov

Abstract

Fine and hyperfine splittings arising from electron, hole and nuclear spin interactions in the magneto-optical spectra of indivisual localized excitons are studied. We explain the magnetic field dependence of the energy splitting through competition between Zeeman, exchange, and hperfine interactions. An unexpectedly small hyperfine contribution to the splitting close to zero applied field is described well by the interplay between fluctuations of the hyperfine field experienced by the nuclear spin and nuclear dipole/dipole interactions.

Citation

Physical Review Letters

Volume

86

Issue

No. 22

Pub Type

Journals

Keywords

electron spin, hyperfine coupling, nuclear spin, quantum dot

Citation

Gammon, R. , Efros, A. , Kennedy, T. , Rosen, M. , Katzer, D. , Park, D. , Brown, S. , Korenev, V. and Merkulov, I. (2001), Electron and Nuclear Spin Interactions in the Optical Spectra of Single GaAs Quantum Dots, Physical Review Letters (Accessed October 8, 2025)