The weak field average magnetic susceptibility of square shaped mesoscopic conductors is studied within a semiclassical framework. Long semiclassical trajectories are strongly affected by static disorder and differ sharply from those of clean systems. They give rise to a large linear paramagnetic susceptibility which is disorder independent and in agreement with recent experiments. The crossover field to a nonlinear susceptibility is discussed.
@article{arxiv.cond-mat/9312079,
title = {Magnetic Response of Disordered Ballistic Quantum Dots},
author = {Yuval Gefen and Daniel Braun and Gilles Montambaux},
journal= {arXiv preprint arXiv:cond-mat/9312079},
year = {2009}
}