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VOLUME 84 (2006) | ISSUE 11 | PAGE 744
On the existence of Rapid Oscillations in various phases of quasi one-dimensional (TMTSF)2PF6
PACS: 73.43.-f, 73.43.Nq, 75.30.Fv
Abstract
We report on the studies of magnetoresistance in (TMTSF)2PF6. We have found that Rapid Oscillations of the magnetoresistance are absent in the metallic state and are present in the spin-ordered states solely, including both the lowest- and higher-order FISDW states. The spin-ordered state, which had previously been believed to be insulating, is not totally gapped; at least, at a finite temperature, there remains a vestigial Fermi surface comprising 2D metallic "pockets". Our data agree qualitatively with the theory that considers the coexistence of two spin-density waves with two respective nesting vectors.