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Novel phases in the field-induced spin-density-wave state in (TMTSF)2PF6

A. V. Kornilov, V. M. Pudalov, Y. Kitaoka, K. Ishida, T. Mito, J. S. Brooks, J. S. Qualls, J. A. A. J. Perenboom, N. Tateiwa, and T. C. Kobayashi
Phys. Rev. B 65, 060404(R) – Published 24 January 2002
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Abstract

Magnetoresistance measurements on the quasi-one-dimensional organic conductor (TMTSF)2PF6 performed in magnetic fields B up to 16 T, temperatures T down to 0.12 K and under pressures P up to 14 kbar have revealed new phases on its PBT phase diagram. We found a new boundary which subdivides the field induced spin density wave (FISDW) phase diagram into two regions. Whereas a low-temperature region of the FISDW diagram is characterized by a hysteresis behavior typical for the first-order transitions, in a high-temperature region of the FISDW phase diagram, the hysteresis was found to disappear. We also found that the temperature dependence of the resistance (at a constant B) changes sign at about the same boundary. We compare these results with recent theoretical models.

  • Received 16 July 2001

DOI:https://doi.org/10.1103/PhysRevB.65.060404

©2002 American Physical Society

Authors & Affiliations

A. V. Kornilov1, V. M. Pudalov1, Y. Kitaoka2, K. Ishida2, T. Mito2, J. S. Brooks3, J. S. Qualls4, J. A. A. J. Perenboom5, N. Tateiwa6, and T. C. Kobayashi6

  • 1P. N. Lebedev Physics Institute/Lebedev Research Center in Physics, Moscow, Russia
  • 2School of Engineering Science, Osaka University, Toyonaka, Osaka, Japan
  • 3National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida
  • 4Wake Forest University, Winston-Salem, North Carolina
  • 5High Field Magnet Laboratory, University of Nijmegen, Nijmegen, The Netherlands
  • 6Research Center for Materials Science at Extreme Conditions, Osaka University, Toyonaka, Osaka, Japan

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Issue

Vol. 65, Iss. 6 — 1 February 2002

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