Cascade of field-induced phase transitions in the organic metal tetramethyltetraselenafulvalenium perchlorate [(TMTSF)2ClO4]
Abstract
We present specific-heat measurements as a function of field (3-6 T) and temperature (0.35-1.7 K) of a single crystal of the organic conductor tetramethyltetraselenafulvalenium perchlorate [(TMTSF)2ClO4]. The small electronic contribution, 40 nJ/K, shows clearly above a temperature-dependent threshold field, a series of jumps and peaks. The phase diagram deduced from this magnetocalorimetric investigation exhibits in the threshold region indications of a partial reentrance of the normal metal in between semimetallic regions.
- Publication:
-
Physical Review Letters
- Pub Date:
- November 1985
- DOI:
- 10.1103/PhysRevLett.55.2495
- Bibcode:
- 1985PhRvL..55.2495P
- Keywords:
-
- Organic Charge Transfer Salts;
- Organometallic Compounds;
- Perchlorates;
- Phase Transformations;
- Superconductors;
- Phase Diagrams;
- Specific Heat;
- Temperature Dependence;
- Solid-State Physics;
- 75.40.-s;
- 65.40.-f;
- 71.25.Hc;
- Critical-point effects specific heats short-range order