Ballistic spin resonance

S. M. Frolov, S. Lüscher, W. Yu, Y. Ren, J. A. Folk () and W. Wegscheider
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S. M. Frolov: University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
S. Lüscher: University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
W. Yu: University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
Y. Ren: University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
J. A. Folk: University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
W. Wegscheider: Institut für Angewandte und Experimentelle Physik, Universität Regensburg

Nature, 2009, vol. 458, issue 7240, 868-871

Abstract: Spin resonance goes ballistic Electron spin resonance produced by high-frequency magnetic or electric fields has applications in fields as diverse as medicine and quantum information. A new variant of the phenomenon is reported in this issue: ballistic spin resonance. This form does not require external driving fields. Instead, it is produced when electrons bouncing back and forth in micrometre-scale channels of a two-dimensional semiconductor structure undergo spin resonance through an effective magnetic field that arises due to their spin-orbit interaction. The effective field oscillates due to repeated reflections at the channel walls, with typical frequencies (in the ∼20–100 GHz range) that are attractive for modern spin resonance applications.

Date: 2009
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DOI: 10.1038/nature07873

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