6 papers
Phase ordering and roughening on growing films
Barbara Drossel, Mehran Kardar
We study the interplay between surface roughening and phase separation during the growth of binary films. Already in 1+1 dimension, we find a variety of different scaling behaviors…
Finite-size effects in the self-organized critical forest-fire model
Klaus Schenk, Barbara Drossel, Siegfried Clar +1
We study finite-size effects in the self-organized critical forest-fire model by numerically evaluating the tree density and the fire size distribution. The results show that this…
Interface roughening with nonlinear surface tension
Barbara Drossel
Using stability arguments, this Brief Report suggests that a term that enhances the surface tension in the presence of large height fluctuations should be included in the Kardar-Pa…
Winding Angle Distributions for Random Walks and Flux Lines
Barbara Drossel, Mehran Kardar
We study analytically and numerically the winding of a flux line around a columnar defect. Reflecting and absorbing boundary conditions apply to marginal or repulsive defects, resp…
Scaling of Energy Barriers for Flux Lines and Other Random Systems
Barbara Drossel, Mehran Kardar
Using a combination of analytic arguments and numerical simulations, we determine lower and upper bounds for the energy barriers to the motion of a defect line in a random potentia…
Energy Barriers to Motion of Flux Lines in Random Media
Lev V. Mikheev, Barbara Drossel, Mehran Kardar
We propose algorithms for determining both lower and upper bounds for the energy barriers encountered by a flux line in moving through a two-dimensional random potential. Analytica…