Semi-classical theory of magnetic quantum oscillations in a two-dimensional multiband canonical Fermi liquid

Abstract

The semi-classical Lifshitz-Kosevich (LK) description of quantum oscillations is extended to a multiband two-dimensional Fermi liquid with a constant number of electrons. The amplitudes of novel oscillations with combination frequencies, recently predicted and observed experimentally, are analytically derived and compared with the single-band amplitudes. The combination amplitudes decay with temperature exponentially faster than the standard harmonics, and this provides a valuable tool for their experimental identification.

3 pages, REVTeX 3.0, one eps-figure included in the text

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