  The temperature dependence of structural properties for infinitely long gold
nanowires is studied. The molecular dynamics simulation method and the
embedded-atom potential are used. The wires constructed at T=0 K with a
face-centered cubic structure and oriented along the (111), (110), and (100)
directions are investigated. It was found that multiwalled structures form in
all these nanowires. The coaxial cylindrical shells are the most pronounced and
well-formed for an initial fcc(111) orientation. The shells stabilize with
increasing temperature above 300 K. All nanowires melt at T<1100 K, i.e., well
below the bulk melting temperature.
