A New Mechanism of Electric Dipole Spin Resonance: Hyperfine Coupling in Quantum Dots

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Author
Laird, Edward A.
Hanson, M. P.
Gossard, Arthur C.
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https://doi.org/10.1088/0268-1242/24/6/064004Metadata
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Laird, Edward A., Christian Barthel, Emmanuel Rashba, Charles M. Marcus, M. P. Hanson, and Arthur C. Gossard. 2009. A new mechanism of electric dipole spin resonance: hyperfine coupling in quantum dots. Semiconductor Science and Technology 24(064004).Abstract
A recently discovered mechanism of electric dipole spin resonance, mediated by the hyperfine interaction, is investigated experimentally and theoretically. The effect is studied using a spin-selective transition in a GaAs double quantum dot. The resonant frequency is sensitive to the instantaneous hyperfine effective field, revealing a nuclear polarization created by driving the resonance. A device incorporating a micromagnet exhibits a magnetic field difference between dots, allowing electrons in either dot to be addressed selectively. An unexplained additional signal at half the resonant frequency is presented.Other Sources
http://arxiv.org/abs/0901.0124v1Terms of Use
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http://nrs.harvard.edu/urn-3:HUL.InstRepos:5110753
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