Reentrant Field-Induced Spin-Density-Wave Transitions

M. J. Naughton; R. V. Chamberlin; X. Yan; S. -Y. Hsu; L. Y. Chiang; M. Ya. Azbel; P. M. Chaikin

doi:10.1103/PhysRevLett.61.621

Reentrant Field-Induced Spin-Density-Wave Transitions

M. J. Naughton, R. V. Chamberlin, X. Yan, S. -Y. Hsu, L. Y. Chiang, M. Ya. Azbel, and P. M. Chaikin

Phys. Rev. Lett. 61, 621 – Published 1 August 1988

Abstract

We have used magnetotransport measurements to determine the phase diagram of ${(TMTSF)}_{2}$ Cl $O_{4}$ from 0.5 to 10 K in magnetic fields to 30 T. This organic metal becomes a spin-density-wave semimetal as temperature is reduced in a magnetic field greater than a threshold field $H_{c} (T = 0) \sim 3$ T. The critical temperature $T_{c} (H)$ increases with field in agreement with present theories, and reaches a maximum of 5.6 K at 18 T. Above this field, however, $T_{c} (H)$ decreases, extrapolating to zero temperature at 17 T. This reentrant phase diagram is not present in any theoretical model.

Received 4 April 1988

DOI:https://doi.org/10.1103/PhysRevLett.61.621

Authors & Affiliations

M. J. Naughton¹, R. V. Chamberlin², X. Yan¹, S. -Y. Hsu¹, L. Y. Chiang³, M. Ya. Azbel¹, and P. M. Chaikin^3,4

¹Department of Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104
²Department of Physics, Arizona State University, Tempe, Arizona 85287
³Exxon Research and Engineering Co., Annandale, New Jersey 08801
⁴Department of Physics, Princeton University, Princeton, New Jersey 08544