Anderson Localization at Band Edges for Random Magnetic Fields

Details Anderson Localization at Band Edges for Random Magnetic Fields Anderson Localization at Band Edges for Random Magnetic Fields

2011-03-19

arxiv.org/abs/1103.3744v1

Physics

Mathematical Physics

Scientific paper

We consider a magnetic Schr\"odinger operator in two dimensions. The magnetic field is given as the sum of a large and constant magnetic field and a random magnetic field. Moreover, we allow for an additional deterministic potential as well as a magnetic field which are both periodic. We show that the spectrum of this operator is contained in broadened bands around the Landau levels and that the edges of these bands consist of pure point spectrum with exponentially decaying eigenfunctions. The proof is based on a recent Wegner estimate obtained in \cite{EH2} and a multiscale analysis.

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