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Phys. Rev. B 52, 13765–13768 (1995)

Inelastic light scattering from a modulated two-dimensional electron gas in magnetic fields

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H. L. Cui
Department of Physics and Engineering Physics, Stevens Institute of Technology, Hoboken, New Jersey 07030

V. Fessatidis
Department of Physics, Fordham University, Bronx, New York 10458

P. Vasilopoulos
Department of Physics, Concordia University, Montreal, Quebec, Canada H3G 1M8

Received 27 July 1995; published in the issue dated 15 November 1995

We study inelastic light scattering from a two-dimensional electron gas subject to a weak in-plane one-dimensional periodic potential modulation and a perpendicular magnetic field. Electronic Raman scattering is considered for (i) inter-Landau-level transitions, which result in a Raman shift of ∼2ωc, and (ii) transitions involving collective excitations at the hybridized magnetoplasmon frequency and a modulation-indued, low-frequency intra-Landau-level plasmon. Raman cross sections and their dependencies on the magnetic field strength and the modulation potential/density are examined.

© 1995 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.52.13765
DOI:
10.1103/PhysRevB.52.13765
PACS:
78.30.-j, 73.20.Dx, 71.45.Gm