Publication: A New Mechanism of Electric Dipole Spin Resonance: Hyperfine Coupling in Quantum Dots
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Date
2009
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Institute of Physics
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Citation
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.
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Keywords
INSB, single-electron, magnetic-resonance, field, semiconductors, manipulation, transitions, transistor
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