Ordering transition of gases adsorbed on a C 60 surface: Monte Carlo simulations and lattice-gas models

Silvina M. Gatica,1,* Milen K. Kostov,2,† and Milton W. Cole3,‡ 1Department of Physics and Astronomy, Howard University, 2355 Sixth Street, NW, Washington, DC 20059, USA 2Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, Florida 32310-6046, USA 3Department of Physics, Pennsylvania State University, 104 Davey Laboratory, University Park, Pennsylvania 16802, USA !Received 9 May 2008; revised manuscript received 30 July 2008; published 12 November 2008"