Magnetic properties in the SDW phase of (TMTSF)2X

Matsunaga, N.; Takeshige, H.; Keitoku, Toshiaki; Nagasawa, M.; Nomura, K.; Sambongi, Takashi

doi:10.1016/0921-4526(94)90962-8

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…It has been proposed that the SDW state of ͑TMTSF͒ 2 PF 6 is divided into three subphases: SDW1 between 12 and 3.5 K, SDW2 between 3.5 and 2 K, and SDW3 below 2 K. 31 In NMR studies, 31,32 two anomalies of T 1 −1 were found at about 3.5 and 2 K besides the SDW transition temperature of 12 K. The corresponding anomalies were observed by heat capacity, 33,34 dielectric constant, 33,35 magnetic susceptibility, 36 and magnetotransport. 37 Recently, Kagoshima et al 12 reported by x-ray measurement that the superlattice reflections due to 2k F and 4k F CDWs disappeared below 3-4 K. They stated that the SDW1 and SDW2 subphases are the coexistent SDW-CDW state, but the amplitude of CDW is very small in the SDW2 subphase.…”

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confidence: 96%

Sliding spin-density wave in(TMTSF)2PF6studied with narrow-band noise

et al. 2004

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We report narrow-band noise (NBN) due to sliding motions of the spin-density wave (SDW) condensate at 2.0 K in three samples of ͑TMTSF͒ 2 PF 6 and the magnetic-field effects. Typical NBN spectra coming from the saw-toothed-wave current oscillations are clearly observed. The periodic peaks due to the 4k F -charge-density wave (CDW) collective excitation are found, together with the SDW moving with a faster velocity, revealing that the sliding mode of the SDW is coupled with 4k F -CDW fluctuations. Observation of the interference peaks gives evidence of spatially nonuniform dc current carried by the deformable SDW in domains. At large currents the NBN spectrum drastically changes with increasing current and depends on applied magnetic field, suggesting a dynamical phase transition from the plastic-flow phase to the moving-solid phase. In the movingsolid phase the frequencies of the periodic peaks decrease with increasing current because the spatial coherency grows rapidly. The current oscillations in this phase are interpreted in terms of the coexistence of the 2k F -CDW collective excitation with the phason.

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