Effect of the dimerized gap due to anion ordering in the field-induced spin-density-wave of quasi-one dimensional organic conductors

N. Matsunaga, K. Hino, T. Ohta, K. Yamashita, K. Nomura, T. Sasaki, A. Ayari, P. Monceau, M. Watanabe, J. Yamada, S. Nakatsuji

Research output: Contribution to journalConference article

6 Citations (Scopus)

Abstract

We have measured Hall resistance and magnetic torque in the field-induced spin-density-wave (FISDW) phase of deuterated (TMTSF)2ClO4 for various cooling rates through the anion ordering temperature. The Hall resistance with the magnetic field parallel to c* is not sensitive to cooling rate above 16T. On the other hand, the Hall resistance between 9 and 14 T rapidly and continuously decreases with increasing cooling rate. This result means that the Hall resistance in the semimetallic SDW phase between 9 and 14 T is not quantized in the intermediate cooled states. A new phase transition from the non-quantized phase to the quantized (n = 1) Hall phase exists with hysteresis of the Hall resistance. Moreover, the new phase boundary is shifted towards a lower field when the cooling rate is increased. We have also found that the magnetic torque in the non-quantized phase rapidly decreases with increasing cooling rate. A possible ground state of non-quantized and Hall phase of the FISDW phase of (TMTSF)2ClO4 is discussed from the viewpoint of the peculiar SDW nesting vector.

Original languageEnglish
Pages (from-to)269-272
Number of pages4
JournalJournal De Physique. IV : JP
Volume131
DOIs
Publication statusPublished - 2005 Dec 1
EventECRYS-2005: International Workshop on Electronic Crystals - Cargese, France
Duration: 2005 Aug 212005 Aug 27

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Matsunaga, N., Hino, K., Ohta, T., Yamashita, K., Nomura, K., Sasaki, T., Ayari, A., Monceau, P., Watanabe, M., Yamada, J., & Nakatsuji, S. (2005). Effect of the dimerized gap due to anion ordering in the field-induced spin-density-wave of quasi-one dimensional organic conductors. Journal De Physique. IV : JP, 131, 269-272. https://doi.org/10.1051/jp4:2005131068