The mass transport of Au ultrathin film on a semiconductor MoS2 was investi
gated by atomic force microscopy (AFM) and scanning Auger microscopy (SAM).
The surface electromigration of the Au film was found when a de current wa
s passed through the MoS2 substrate. The Au ultrathin film on MoS2 grew in
a typical Volmer-Weber (V-W) growth mode, The AFM measurements indicated th
at the distribution of the Au islands exhibited clearly a preferential late
ral spread towards the cathode, that is, the surface electromigration took
place. The direction of the surface electromigration on MoS2 is opposite to
that of the Au electromigration on Si. (C) 2001 Elsevier Science B.V. All
rights reserved.