title: Electrically detected magnetic resonance of neutral donors interacting with a two-dimensional electron gas.
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.
authors.affiliation: Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, USA. cclo@eecs.berkeley.edu
authors.forename: C C
authors.initials: CC
authors.lastname: Lo
authors.forename: V
authors.initials: V
authors.lastname: Lang
authors.forename: R E
authors.initials: RE
authors.lastname: George
authors.forename: J J L
authors.initials: JJ
authors.lastname: Morton
authors.forename: A M
authors.initials: AM
authors.lastname: Tyryshkin
authors.forename: S A
authors.initials: SA
authors.lastname: Lyon
authors.forename: J
authors.initials: J
authors.lastname: Bokor
authors.forename: T
authors.initials: T
authors.lastname: Schenkel