Groupe de Physique Statistique

Equipe 106, Institut Jean Lamour

                     
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Articles dans des revues à comité de lecture

Analytical treatment of the de Haas-van Alphen frequency combination due to chemical potential oscillations in an idealized two-band Fermi liquid
Fortin J.-Y., Perez E., Audouard A.
Physical Review B - Condensed Matter and Materials Physics 71 (2005) 1
DOI : 10.1103/PhysRevB.71.155101
ArXiv : cond-mat/0406596 [PDF]

The de Haas-van Alphen oscillation spectrum is studied for an idealized two-dimensional Fermi liquid with two parabolic bands in the case of canonical (fixed number of quasiparticles) and grand canonical (fixed chemical potential) ensembles. As already reported in the literature, oscillations of the chemical potential in magnetic field yield frequency combinations that are forbidden in the framework of the semiclassical theory. Exact analytical calculation of the Fourier components is derived at zero temperature, and an asymptotic expansion is given for the high-temperature and low-magnetic-field range. Good agreement is obtained between analytical formulas and numerical computations.



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