Hyperfine-Mediated Gate-Driven Electron Spin Resonance

Laird, E A and Barthel, C and Rashba, E I and Marcus, C M and Hanson, M P and Gossard, A C (2007) Hyperfine-Mediated Gate-Driven Electron Spin Resonance. Physical review letters, 99 (24). ISSN 0031-9007

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An all-electrical spin resonance effect in a GaAs few-electron double quantum dot is investigated experimentally and theoretically. The magnetic field dependence and absence of associated Rabi oscillations are consistent with a novel hyperfine mechanism. The resonant frequency is sensitive to the instantaneous hyperfine effective field, and the effect can be used to detect and create sizable nuclear polarizations. A device incorporating a micromagnet exhibits a magnetic field difference between dots, allowing electrons in either dot to be addressed selectively.

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Journal Article
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Physical review letters
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04 Apr 2018 10:34
Last Modified:
22 Nov 2022 05:42