Magnetic oscillations in planar systems with the Dirac-like spectrum of quasiparticle excitations

Details Magnetic oscillations in planar systems with the Dirac-like spectrum of quasiparticle excitations Magnetic oscillations in planar systems with the Dirac-like spectrum of quasiparticle excitations

2003-08-12

arxiv.org/abs/cond-mat/0308216v2

Phys.Rev.B69:075104,2004

Physics

Condensed Matter

Strongly Correlated Electrons

29 pages, RevTeX4, 5 EPS figures; final version published in PRB

Scientific paper

10.1103/PhysRevB.69.075104

The quantum magnetic oscillations are studied for planar condensed matter systems with a linear, Dirac-like spectrum of quasiparticle excitations. We derive analytical expressions for magnetic oscillations (de Haas - van Alphen effect) in the density of states, thermodynamic potential, magnetization and chemical potential both for zero and finite temperatures, and in the presence of scattering from impurities. We discuss also a possibility of using magnetic oscillations for detection of a gap that may open in the spectrum of quasiparticle excitations due to a nontrivial interaction between them.

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