Role of the dimerized gap due to anion ordering in spin-density wave phase of (TMTSF)2ClO4 at high magnetic fields

N. Matsunaga, A. Ayari, P. Monceau, A. Ishikawa, K. Nomura, M. Watanabe, J. Yamada, S. Nakatsuji

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15 Citations (Scopus)

Abstract

Magnetoresistance measurements have been carried out along the highly conducting a axis in the field-induced spin-density wave (FISDW) phase of hydrogenated and deuterated (TMTSF)2ClO4 for various cooling rates through the anion ordering temperature. With increasing the cooling rate, (i) the high-field phase boundary βHI, observed at 27 T in hydrogenated samples for slowly cooled, is shifted towards a lower field, (ii) the last semimetallic SDW phase below βHI is suppressed, and (iii) the FISDW insulating phase above βHI is enhanced in both salts. The cooling rate dependence of the FISDW transition and of βHI in both salts can be explained by taking into account the peculiar SDW nesting vector stabilized by the dimerized gap due to anion ordering.

Original languageEnglish
Article number024425
Pages (from-to)244251-244255
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume66
Issue number2
DOIs
Publication statusPublished - 2002 Jul 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Matsunaga, N., Ayari, A., Monceau, P., Ishikawa, A., Nomura, K., Watanabe, M., Yamada, J., & Nakatsuji, S. (2002). Role of the dimerized gap due to anion ordering in spin-density wave phase of (TMTSF)2ClO4 at high magnetic fields. Physical Review B - Condensed Matter and Materials Physics, 66(2), 244251-244255. [024425]. https://doi.org/10.1103/PhysRevB.66.024425