Optical properties of a two-dimensional electron gas at even-denominator filling fractions

Details Optical properties of a two-dimensional electron gas at even-denominator filling fractions Optical properties of a two-dimensional electron gas at even-denominator filling fractions

1996-06-28

arxiv.org/abs/cond-mat/9606216v2

Physics

Condensed Matter

17 pages, LaTeX, 7 figures. This revised version is to appear in Physical Review B

Scientific paper

10.1103/PhysRevB.55.7141

The optical properties of an electron gas in a magnetic field at filling fractions \nu = {1\over 2m} (m=1,2,3...) are investigated using the composite fermion picture. The response of the system to the presence of valence-band holes is calculated. The shapes of the emission spectra are found to differ qualitatively from the well-known electron-hole results at zero magnetic field. In particular, the asymmetry of the emission lineshape is found to be sensitive to the hole-composite fermion plane separation.

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