Journal
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Volume 12, Issue 1-4, Pages 443-445Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1386-9477(01)00313-7
Keywords
electronic transport; two-dimensional electrons; phonon
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Low-magnetic field (B < 5 kG) magnetoresistance oscillations (periodic in 1/B) have been observed in a high-mobility two-dimensional electron gas (2DEG). Such novel oscillations appear only in a limited temperature range (approximately, 2 K < T < 10 K). The effect is attributed to magnetophonon resonance of 2DEG with thermally excited leaky interface-acoustic phonons. Results from Fourier analysis of the temperature dependence data are consistent with a model in which two branches of phonon modes contribute to the resonance. (C) 2002 Elsevier Science B.V. All rights reserved.
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