Abstract
Argon multilayers adsorbed on graphite display heat-capacity anomalies attributed to surface roughening and surface melting. Melting begins 3° or 4° below the triple point, producing strong peaks with power-law risers , . The exponent and the thickness dependence of peak temperature agree with the theory of surface melting under long-range forces. Rounded anomalies at are identified with roughening transitions. The two types of anomalies are well separated, indicating that melting and roughening are distinct forms of surface disorder.
- Received 5 September 1986
DOI:https://doi.org/10.1103/PhysRevLett.57.2959
©1986 American Physical Society