Comment on `Origin of combination frequencies in quantum magnetic oscillations of two-dimensional multiband metals' by T. Champel [Phys. Rev. B 65, 153403 (2002); cond-mat/0110154]

Details Comment on `Origin of combination frequencies in quantum magnetic oscillations of two-dimensional multiband metals' by T. Champel [Phys. Rev. B 65, 153403 (2002); cond-mat/0110154] Comment on `Origin of combination frequencies in quantum magnetic oscillations of two-dimensional multiband metals' by T. Champel [Phys. Rev. B 65, 153403 (2002); cond-mat/0110154]

2002-07-06

arxiv.org/abs/cond-mat/0207173v3

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

3 pages, 1 figure; (v2) chemical potential oscillations for dirty sample are added to the inset to illustrate the effect; (v3)

Scientific paper

We analyze the applicability of our analytical theory of combination harmonics in canonical low-dimensional multi-band Fermi liquids, which was recently criticized by Champel (Phys. Rev. B 65, 153403 (2002)). It is shown that his claim that our analytical theory does not apply at low temperatures and in clean samples, is incorrect. We demonstrate that the analytical theory of combination harmonics is in excellent agreement with the exact numerical results even at zero temperature and for clean systems, which are the most challenging for an analytical description.

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