Effect of exchange interaction on spin dephasing in a double quantum dot

Laird, E. A. and Petta, J. R. and Johnson, A. C. and Marcus, C. M. and Yacoby, A. and Hanson, M. P. and Gossard, A. C. (2006) Effect of exchange interaction on spin dephasing in a double quantum dot. Physical review letters, 97 (5). ISSN 0031-9007

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Abstract

We measure singlet-triplet dephasing in a two-electron double quantum dot in the presence of an exchange interaction which can be electrically tuned from much smaller to much larger than the hyperfine energy. Saturation of dephasing and damped oscillations of the spin correlator as a function of time are observed when the two interaction strengths are comparable. Both features of the data are compared with predictions from a quasistatic model of the hyperfine field.

Item Type: Journal Article
Journal or Publication Title: Physical review letters
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 124370
Deposited By: ep_importer_pure
Deposited On: 04 Apr 2018 10:32
Refereed?: Yes
Published?: Published
Last Modified: 01 Jan 2020 11:16
URI: https://eprints.lancs.ac.uk/id/eprint/124370

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