MAGNETIC-SUSCEPTIBILITY OF TMTSF-DMTCNQ UNDER PRESSURE

The susceptibility of TMTSF-DMTCNQ was measured in the newly discovered highly-conducting state under pressure. At a pressure of 12 kbar, the susceptibility χm (with the core diamagnetism subtracted) changes sign from the room-temperature paramagnetic value and becomes diamagnetic at a temperature of approximately 30 K. At a temperature of 5-10 K χm reaches a value of approximately -7 × 10-4 emu mole-1. This value is about 3 times larger than the previously reported diamagnetism of HMTSF-TCNQ. © 1979.