Quantum oscillations and field-induced transitions in (TMTSF)₂ReO₄

We report the magnetoresistance of (TMTSF)2ReO4 in the metallic state at low temperature and high pressure. We find evidence for a series of magnetic field induced phase transitions. We also observe Shubnikov-de Haas oscillations both above and below the threshold for the field induced transition - an anomalous result that is not explained by present theories. © 1986.