Abstract
We have measured the long-range order of the α phase of Sn on the Ge(111) surface throughout the phase transition. The transition has been found of the order-disorder type with a critical temperature The expected three-state Potts critical exponents are shown to be consistent with the observed power-law dependence of the order parameter and its correlation length close to thus excluding a charge-density wave driven phase transition.
- Received 13 April 2001
DOI:https://doi.org/10.1103/PhysRevB.64.075405
©2001 American Physical Society