Surface melting of Al(110) was studied by molecular dynamics simulations wi
th a well tested glue potential. We found that the surface began to disorde
r above 600 K via the formation of adatoms and vacancies. While bulk meltin
g was observed at 945 K (experimental melting point is 933.5 K), the top fo
ur atomic layers were found to become liquid-like just before the bulk melt
s. Both the diffusion constants and the structure factors confirmed that su
rface melting of Al(110) was anisotropic, with random atom motion faster in
the  direction than in the  direction. On the other hand, in agr
eement with recent experimental observations [M. Polcik et al., Phys. Rev.
Lett. 78 (1997) 491], our calculations showed the presence of a residual or
der preferentially along the [1 (1) over bar 0] direction via the presence
of intact  atom chain segments, even above 900 K. (C) 1999 Elsevier Sc
ience B.V. All rights reserved.