Phys. Rev. B 64, 201311(R) (2001) [4 pages]Shubnikov–de Haas-like oscillations in millimeterwave photoconductivity in a high-mobility two-dimensional electron gas
Millimeterwave photoconductivity in a high-mobility GaAs-AlxGa1-xAs two-dimensional electron gas exhibits giant amplitude oscillations in a weak magnetic field. These oscillations resemble the Shubnikov–de Haas effect but their period is determined by ω/ωC, where ω and ωC are the millimeterwave and cyclotron frequencies, respectively. The major observations can be explained in terms of Landau-level transitions between spatially shifted oscillators. A 2kF momentum transfer is accompanying the transition where kF is the electron Fermi wave number. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.64.201311
DOI:
10.1103/PhysRevB.64.201311
PACS:
73.50.Pz, 73.21.-b
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