Slow oscillations of magnetoresistance in quasi-two-dimensional metals

Details Slow oscillations of magnetoresistance in quasi-two-dimensional metals Slow oscillations of magnetoresistance in quasi-two-dimensional metals

2002-03-13

arxiv.org/abs/cond-mat/0203279v1

Phys. Rev. Lett. 89, 126802 (2002)

Physics

Condensed Matter

11 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.89.126802

Slow oscillations of the interlayer magnetoresistance observed in the layered organic metal $\beta $-(BEDT-TTF)$_2$IBr$_2$ are shown to originate from the slight warping of its Fermi surface rather than from independent small cyclotron orbits. Unlike the usual Shubnikov-de Haas effect, these oscillations are not affected by the temperature smearing of the Fermi distribution and can therefore become dominant at high enough temperatures. We suggest that the slow oscillations are a general feature of clean quasi-two-dimensional metals and discuss possible applications of the phenomenon.

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