We consider a system of trimers and monomers on the triangular lattice, which
describes the adsorption problem on (111) 1×1 surface of diamond
structure. We give a mapping to a 3-state vertex model on the square lattice.
We treat the problem by the transfer-matrix method combined with the
density-matrix algorithm, to obtain thermodynamic quantities.Comment: 9 pages, 7 figures, PTPTeX ver. 1.0. To appear Progress of
Theoretical Physics, Jan. 2001. http://www2.yukawa.kyoto-u.ac.jp/~ptpwww/
(Full Access