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Spin-density-wave transition of (TMTSF)2 PF6 at high magnetic fields

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Title: Spin-density-wave transition of (TMTSF)2 PF6 at high magnetic fields
Authors: Matsunaga, N.1 Browse this author →KAKEN DB
Yamashita, K. Browse this author
Kotani, H. Browse this author
Nomura, K. Browse this author
Authors(alt): 松永, 悟明1
Issue Date: 1-Aug-2001
Publisher: American Physical Society
Volume: 64
Issue: 5
Start Page: 052405
Publisher DOI: 10.1103/PhysRevB.64.052405
Abstract: The transverse magnetoresistance of the Bechgaard salt (TMTSF)2PF6 has been measured for various pressures, with the field up to 24 T parallel to the lowest-conductivity direction c*. A quadratic behavior is observed in the magnetic-field dependence of the spin-density-wave (SDW) transition temperature TSDW. With increasing pressure, TSDW decreases and the coefficient of the quadratic term increases. These results are consistent with the prediction of the mean-field theory based on the nesting of the quasi-one-dimensional Fermi surface. Using a mean-field theory, TSDW for the perfect nesting case is estimated as about 16 K. This means that even at ambient pressure where TSDW is 12 K, the SDW phase of (TMTSF)2PF6 is substantially suppressed by the two dimensionality of the system.
Rights: Copyright © 2001 American Institute of Physics
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 松永 悟明

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