Uniaxial strain and anisotropy in the spin density wave in (TMTSF) 2PF 6

• Published in: The Journal of physics and chemistry of solids Vol. 63; no. 6; pp. 1263 - 1265
• Main Authors: Murata, K, Iwashita, K, Mizuno, Y, Guo, F.Z, Shodai, S, Yoshino, H, Brooks, J.S, Balicas, L, Graf, D, Storr, K, Rutel, I, Uji, S, Terakura, C, Imanaka, Y
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 2002
• Subjects: A. Organic compounds; D. Electronic structure; D. Fermi surface; D. Transport properties; D: Spin-density waves; D. Electronic structure; D: Spin-density waves; D. Fermi surface; D. Transport properties; A. Organic compounds
• ISSN: 0022-3697; 1879-2553
• DOI: 10.1016/S0022-3697(02)00022-7

The temperature–uniaxial pressure ( T– P) phase diagram of metal, spin density wave in (TMTSF) 2PF 6 was apparently quite similar to that of hydrostatic pressure irrespective of the direction of the uniaxial pressure in strain method. However, by the examination of ρ a , ρ b′ and ρ c ∗ under three uniaxial pressures, it was found that the anisotropy was similar between hydrostatic and a-axis-uniaxial pressure. The strain along b′ and c ∗-axes reduces the anisotropy strongly, i.e. t a / t b′ =4.3 with p//c ∗=10 kbar, for instance, where still spin density wave is present. Although a-compression seems to vary the anisotropy similarly to that of the hydrostatic pressure, the so-called rapid oscillation was not observed under a-compression but under the hydrostatic pressure. This result implies that the effect of a-compression is still different from that of the hydrostatic pressure. We discuss how our result is related with the electron correlation.