Evidence for Ising and Potts Transitions in theTransformation of Two-Dimensional
- 29 August 1983
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 51 (9) , 790-793
- https://doi.org/10.1103/physrevlett.51.790
Abstract
Two-dimensional physisorbed on graphite shows a structural and magnetic phase transition from the paramagnetic to the antiferromagnetic state. A high-resolution specific-heat measurement is presented which reveals that there are two successive phase transitions: first a three-state Potts transition, producing a distorted lattice being still paramagnetic, and second an elastically driven Ising transition from the paramagnetic to the antiferromagnetic state.
Keywords
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