Interplay of instabilities in mounded surface growth.
We numerically study a one-dimensional conserved growth equation with competing linear (Ehrlich-Schwoebel) and nonlinear instabilities. As a control parameter is varied, this model exhibits a nonequilibrium phase transition between two mounded states, one of which exhibits slope selection and the other does not. The coarsening behavior of the mounds in these two phases is studied in detail. In the absence of noise, the steady-state configuration depends crucially on which of the two instabilities dominates the early time behavior.
Chakrabarti
Buddhapriya
B
Centre for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India. buddho@physics.umass.edu
Dasgupta
Chandan
C