MELTING BEHAVIOR OF QUASI-2-DIMENSIONAL N-2 ADLAYERS DEPOSITED ON GRAPHITE

Citation
B. Kuchta et Rd. Etters, MELTING BEHAVIOR OF QUASI-2-DIMENSIONAL N-2 ADLAYERS DEPOSITED ON GRAPHITE, Physical review. B, Condensed matter, 54(17), 1996, pp. 12057-12066
Citations number
61
Categorie Soggetti
Physics, Condensed Matter
ISSN journal
01631829
Volume
54
Issue
17
Year of publication
1996
Pages
12057 - 12066
Database
ISI
SICI code
0163-1829(1996)54:17<12057:MBOQNA>2.0.ZU;2-B
Abstract
The melting behavior of partial and complete Nz monolayers on graphite is examined using a Monte Carlo procedure in conjunction with the mul tiple histogram method. It is found that vacancies inherent in partial monolayers, and those thermally induced by out-of-plane motion at or near monolayer completion, are important factors in predicting the den sity dependence of the melting temperature. Calculated at various surf ace densities are the melting temperatures, specific heats, order para meters, probability distributions for molecular positions and orientat ions, and fluctuations in these quantities. With this information the mechanism of the melting transition is elucidated, and the temperature and density dependence of the specific heats and order parameters is explained.