Ballistic electron transport in AlAs quantum wells

O. Gunawan, Y. P. Shkolnikov, E. P. De Poortere, E. Tutuc, M. Shayegan

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


The observation of commensurability oscillations in an AlAs two dimensional electron system was presented where two conduction band valleys with elliptical in plane Fermi contours are occupied. The Fourier power spectrum of the oscillations shows two frequency components consistent with those expected for the Fermi contours of the two valleys. The study extract more information, such as the amplitude, phase and scattering time for the COs of each valley by performing partial inverse Fourier analysis. It was observed that ml/mt = 5.2±0.5 for the ratio of the longitudinal and transverse electron effective masses cannot directly measured from other transport experiments.

Original languageEnglish (US)
Article number246603
JournalPhysical review letters
Issue number24
StatePublished - Dec 10 2004

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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