Sawtooth chemical potential oscillations in the strongly 2D organic metal κ-(BEDT-TTF)2I3 at high Landau level filling factors

In the strongly two-dimensional (2D) organic metal K-(BEDT- TTF)(2)I-3, sawtooth oscillations of the chemical potential mu are observed by means of Shubnikov-de Haas and de Haas-van Alphen experiments. The sawtooth shape of these oscillations of mu corresponds to the behaviour of a 2D canonical ensemble of electrons. In contrast to preceding investigations, the simple method described here probes mu, directly and reveals oscillations of g with the quantum oscillation frequency F-0 = 13T. (C) 2002 Elsevier Science Ltd. All rights reserved