High-frequency magneto-oscillations in GaAs/AlGaAs quantum wells

Y. W. Tan, H. L. Stormer, L. N. Pfeiffer, K. W. West

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We have observed very high-frequency, highly reproducible magneto-oscillations in modulation doped GaAs/AlGaAs quantum well structures. The oscillations are periodic in an inverse magnetic field (1/B) and their amplitude increases with temperature up to T∼700mK. Being initially most pronounced around the filling factor ν=1/2, they move towards lower ν with increasing T. Front and back-gating data imply that these oscillations require a coupling to a parallel conducting layer. A comparison with existing oscillation models renders no explanation.

Original languageEnglish (US)
Article number036804
JournalPhysical review letters
Volume98
Issue number3
DOIs
StatePublished - 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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