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arXiv · 1012.3811

Electrically detected magnetic resonance of neutral donors interacting with a two-dimensional electron gas

C. C. Lo·V. Lang·R. E. George·J. J. L. Morton·A. M. Tyryshkin·S. A. Lyon·J. Bokor·T. Schenkel
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Abstract

We have measured the electrically detected magnetic resonance of channel-implanted donors in silicon field-effect transistors in resonant X- ($9.7\:$GHz) and W-band ($94\:$GHz) microwave cavities, with corresponding Zeeman fields of $0.35\:$T and $3.36\:$T, respectively. It is found that the conduction electron resonance signal increases by two orders of magnitude from X- to W-band, while the hyperfine-split donor resonance signals are enhanced by over one order of magnitude. We rule out a bolometric origin of the resonance signals, and find that direct spin-dependent scattering between the two-dimensional electron gas and neutral donors is inconsistent with the experimental observations. We propose a new polarization transfer model from the donor to the conduction electrons as the main contributer to the spin resonance signals observed.

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C. C. Lo, V. Lang, R. E. George, J. J. L. Morton, A. M. Tyryshkin, S. A. Lyon, J. Bokor, T. Schenkel. 2010-12-17. Electrically detected magnetic resonance of neutral donors interacting with a two-dimensional electron gas. https://doi.org/10.1103/physrevlett.106.207601

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