4 papers
Interface Motion in Disordered Ferromagnets
L. Roters, S. Lubeck, K. D. Usadel
We consider numerically the depinning transition in the random-field Ising model. Our analysis reveals that the three and four dimensional model displays a simple scaling behavior…
A microscopic model for exchange bias
A. Misra, U. Nowak, K. D. Usadel
The domain state model for exchange bias has been further investigated by considering vector spins for the antiferromagnet instead of Ising spins used in the earlier studies. The q…
SOC in a class of sandpile models with stochastic dynamics
S. Lubeck, K. D. Usadel
We have studied one-dimensional cellular automata with updating rules depending stochastically on the difference of the heights of neighbouring cells. The probability for toppling…
Density fluctuations and phase separation in a traffic flow model
S. Lubeck, M. Schreckenberg, K. D. Usadel
Within the Nagel-Schreckenberg traffic flow model we consider the transition from the free flow regime to the jammed regime. We introduce a method of analyzing the data which is ba…