Studies of quasi-two-dimensional organic conductors based on BEDT-TTF using high magnetic fields

Recent studies of charge-transfer salts of the ion bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF or ET) are reviewed, focusing in particular on experimental techniques which involve high magnetic fields and on data obtained since 1996. Novel experimental techniques developed in the past few years, including angle-dependent magnetoresistance oscillations, periodic orbit resonances and Fermi-surface traversal resonances are described in detail; briefer descriptions of more traditional techniques such as the Shubnikov-de Haas effect are also included. The applications of these techniques to the κ, α, β and β'' BEDT-TTF salts is described. Theoretical developments related to the experimental data are also mentioned.