Anisotropy of the Spin Density Wave Onset for (TMTSF)_2PF_6 in Magnetic Field

Details Anisotropy of the Spin Density Wave Onset for (TMTSF)_2PF_6 in Magnetic Field Anisotropy of the Spin Density Wave Onset for (TMTSF)_2PF_6 in Magnetic Field

2009-11-12

arxiv.org/abs/0911.2351v1

Phys. Rev. B 80, 184417 (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

15 pages, 5 figures, accepted to PRB

Scientific paper

In order to study the spin density wave transition temperature (T_SDW) in (TMTSF)_2PF_6 as a function of magnetic field, we measured the magnetoresistance R_zz in fields up to 19 T. Measurements were performed for three field orientations B||a, b' and c* at ambient pressure and at P = 5 kbar, that is nearly the critical pressure. For B||c* orientation we observed quadratic field dependence of T_SDW in agreement with theory and with previous experiments. For B||b' and B||a orientations we have found no shift in T_SDW within 0.05 K, both at P=0 and P=5 kbar. This result is also consistent with theoretical predictions.

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