2006/02/28 by Natalya A. Zimbovskaya, Natalya A Zimbovskaya
Materials Science · Physics and Astronomy · #Magnetism in coordination complexes #Organic and Molecular Conductors Research #Physics of Superconductivity and Magnetism #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1088/0953-8984/19/17/176227
published as 2007 J. Phys.: Condens. Matter 19 176227 (14pp) · 9 pages, 4 figures, text added, references added
arxiv created 2007/02/05 · openalex publication_date 2007/04/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
Here, we present the results of theoretical analysis of the de Haas-van Alphen oscillations in quasi-two-dimensional normal metals. We have studied the effects of the Fermi surface (FS) shape on these oscillations. It is shown that the effects could be revealed and well pronounced when the FS curvature becomes zero at cross-sections with extremal cross-sectional areas. In this case, both the shape and amplitude of the oscillations could be significantly changed. Also, we analyse the effect of the FS local geometry on the angular dependences of the oscillation amplitudes when the magnetic field is tilted away from the FS symmetry axis by the angle θ. We show that a peak appears at θ≈0° whose height could be of the same order as the maximum at the Yamaji angle. This peak emerges when the FS includes zero-curvature cross-sections of extremal areas. Such a maximum was observed in experiments on α-(BETS)(4)TIHg(SeCN)(4). The results that were obtained could be applied to organic metals and other quasi-two-dimensional compounds.