Tetramethyltetraselenafulvalenium perchlorate, (TMTSF)2ClO4, in high magnetic fields

The Hall effect and the magnetoresistance of (TMTSF)2ClO4 have been measured at temperatures from 0.08 to 10 K and in magnetic fields to 22 T. The low-temperature data suggest a series of transitions induced by an orbital effect from the magnetic field which progressively reduce the carrier density. Oscillations, apparently Shubnikov-de Haas, also are observed above 10 T and at temperatures up to 10 K. © 1983 The American Physical Society.