Statistical Physics Group

Team 106, Jean Lamour Institute

                     
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Schedule

March 2017
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Next seminar(s): Thursday 02 March 2017
10:05 : L'open access, d├ęposer dans Hal (Virginie Lang)
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Last paper

de Haas-van Alphen oscillations with non-parabolic dispersions
Fortin J.-Y., Audouard A.
Eur. Phys. J. B (2017)
ArXiv : arxiv:1702.04599 [PDF]

de Haas-van Alphen oscillation spectrum of two-dimensional systems is studied for general power law energy dispersion, yielding a Fermi surface area of the form $S(E)\propto E^{\alpha}$ for a given energy E. The case $\alpha=1$ stands for the parabolic energy dispersion. It is demonstrated that the periodicity of the magnetic oscillations in inverse field can depend notably on the temperature. We evaluated analytically the Fourier spectrum of these oscillations to evidence the frequency shift and smearing of the main peak structure as the temperature increases.


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