Abstract
We have used magnetotransport measurements to determine the phase diagram of Cl 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 T. The critical temperature increases with field in agreement with present theories, and reaches a maximum of 5.6 K at 18 T. Above this field, however, 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
©1988 American Physical Society