Electrically detected magnetic resonance of neutral donors interacting with a two-dimensional electron gas.
Phys Rev Lett
; 106(20): 207601, 2011 May 20.
Article
em En
| MEDLINE
| ID: mdl-21668263
ABSTRACT
We have measured the electrically detected magnetic resonance of donor-doped silicon field-effect transistors in resonant X- (9.7 GHz) and W-band (94 GHz) microwave cavities. The two-dimensional electron gas resonance signal increases by 2 orders of magnitude from X to W band, while the donor resonance signals are enhanced by over 1 order of magnitude. Bolometric effects and spin-dependent scattering are inconsistent with the observations. We propose that polarization transfer from the donor to the two-dimensional electron gas is the main mechanism giving rise to the spin resonance signals.
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MEDLINE
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En
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Phys Rev Lett
Ano de publicação:
2011
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Article