Commensurability effects in the magnetoresistance of (TMTSF)2PF6 |
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Authors: | K. Behnia M. Ribault |
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Affiliation: | a Laboratoire de Physique des Solides, URA 2-CNRS, Université Paris-Sud F- 91405 Orsay cedex France |
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Abstract: | We present a study of the angular dependence of the magnetoresistance of the quasi-one-dimensiona1 organic conductor (TMTSF)2PF6. For some special orientations of magnetic field in the least-conducting plane, a commensurability effect in the electronic open-orbit motion is expected. At these special "magic angles", dips in the resistance along the least-conducting axis in both metallic and field-induced-spin-density-wave (FISDW) states are detected. In the latter states, the dips gradually fade away with the increasing field. Moreover, the commenusurability effect intereferes directly with FISDW transitions: For magic angles, the threshold field goes through a weak minimum and the amplitude of the FISDW magnetoresistance oscillations is diminished. |
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