ESAM Seminar in Nonlinear Science

Title: Dynamic transitions in moving vortex system subject quenched disorder
Speaker: Professor I. Aranson
Speaker Info: Argonne Natl. Lab and Bar-Ilan U.
Brief Description:
Special Note:

The bifurcations in a driven periodic system (we focused on the lattice of Abrikosov vortices for definitness) subject to the quenched disorder are investigated analytically and by numerical simulations of the quasi three-dimensional time-dependent Ginzburg-Landau equations. We have found two distinct dynamic transitions: dynamic melting transition, similar to two-dimensional system (abrupt drop in the number of lattice defects), and the dynamic alignment transition, which occurs only in three-dimensional system. A universal structure of the bifurcation lines as functions of renormalized parameters of the problem is established.
Date: Friday, February 21, 1997
Time: 1:30pm
Where: Tech 3396
Contact Person: Prof. Riecke
Contact email: h-riecke@nwu.edu
Contact Phone: 847-491-8316
Copyright © 1997-2024 Department of Mathematics, Northwestern University.