Observation of a Spin-Peierls Transition in a Heisenberg Antiferromagnetic Linear-Chain System
Abstract
Magnetic-susceptibility and EPR measurements are reported which provide the first unambiguous evidence for a spin-Peierls transition in a system of linear one-dimensional antiferromagnetic Heisenberg chains. The material studied is TTFCuS4C4(CF3)4 (TFF stands for tetrathiafulvalinium). At 12 K, the spin-lattice system undergoes a second-order phase transition to a singlet ground state.
- Publication:
-
Physical Review Letters
- Pub Date:
- September 1975
- DOI:
- 10.1103/PhysRevLett.35.744
- Bibcode:
- 1975PhRvL..35..744B