TITLE

Strain-induced enhancement of electric quadrupole splitting in resistively detected nuclear magnetic resonance spectrum in quantum Hall systems

AUTHOR(S)
Kawamura, M.; Yamashita, T.; Takahashi, H.; Masubuchi, S.; Hashimoto, Y.; Katsumoto, S.; Machida, T.
PUB. DATE
January 2010
SOURCE
Applied Physics Letters;1/18/2010, Vol. 96 Issue 3, p032102
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We show electrical coherent manipulation of quadrupole-split nuclear spin states in a GaAs/AlGaAs heterostructure on the basis of the breakdown of quantum Hall effect. The electric quadrupole splitting in nuclear spin energy levels is intentionally enhanced by applying an external stress to the heterostructure. Nuclear magnetic resonance spectra with clearly separated triple peaks are obtained, and Rabi oscillations are observed between the nuclear spin energy levels. The decay of the spin-echo signal is compared between the cases before and after the enhancement of quadrupole splitting.
ACCESSION #
47680139

 

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