Role of the Anion Ordering in the Field-Induced Spin-Density-Wave Phase


The field-induced spin-density-wave (FISDW) phase in (TMTSF)2ClO4 was investigated through magnetic torque measurements. We have found that the magnetic torque in the non-quantized Hall phase rapidly decreases with increasing cooling rate through the anion ordering temperature. This result suggests that there is a new phase transition from the non-quantized Hall phase to the quantized Hall phase in (TMTSF)2ClO4.

Grad. School of Sci., Hokkaido University: N. Matsunaga, K. Nomura
IMR, Tohoku University: T. Sasaki
Grad. School of Mater. Sci., University of Hyogo: J. Yamada, S. Nakatsuji

Reference: N. Matsunaga, K. Hino, K. Nomura, T. Sasaki, et. al.,
"Effect of the dimerized gap due to anion ordering in the field-induced spin-density-wave of quasi-one dimensional organic conductors"
J. Phys. IV France 131, 269-272 (2005).