APS » PROLA » Phys. Rev. B » Volume 50 » Issue 16

Phys. Rev. B 50, 12242 - 12245 (1994)

Cyclotron-resonance oscillations in a two-dimensional electron-hole system
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J. Kono and B. D. McCombe
Department of Physics, State University of New York at Buffalo, Buffalo, New York 14260

J.-P. Cheng
Francis Bitter National Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

I. Lo, W. C. Mitchel, and C. E. Stutz
Wright Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433-6533

Rapid Communication

Pronounced oscillations have been observed in linewidth, amplitude, and mass of electron cyclotron resonance in InAs/AlxGa1-xSb quantum wells when holes coexist with electrons. The strength of the oscillations increases sensitively with electron-hole pair density; the oscillations are absent for semiconducting samples (x≳0.3) in which there are no holes. Results are interpreted in terms of a filling-factor-dependent electron-hole interaction.


©1994 The American Physical Society

URL: http://link.aps.org/abstract/PRB/v50/p12242
DOI: 10.1103/PhysRevB.50.12242
PACS: 73.20.Dx, 71.35.+z, 76.40.+b, 78.66.Fd

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