Fermi surface shape and angle-dependent magnetoresistance oscillations

The shape of the Fermi surface of organic metals can be measured by recordi ng angle-dependent magnetoresistance oscillations. We review this technique and develop a model for parametrizing the shape of the quasi-two-dimension al Fermi surface sections which often appear in organic metals, Using this model, we show that it is possible to extract more detail about the quasi-t wo-dimensional pocket shape from angle-dependent magnetoresistance oscillat ions than in the traditional approximation which assumes an elliptical Ferm i surface shape. We also consider the implications for cyclotron resonance experiments.