Anderson Localization and Lifshits Tails for Random Surface Potentials

Details Anderson Localization and Lifshits Tails for Random Surface Potentials Anderson Localization and Lifshits Tails for Random Surface Potentials

2004-12-22

arxiv.org/abs/math-ph/0412079v1

Physics

Mathematical Physics

Scientific paper

We consider Schr\"odinger operators on $L^2(R^d)$ with a random potential concentrated near the surface $R^{d_1}\times\{0\}\subset R^d $. We prove that the integrated density of states of such operators exhibits Lifshits tails near the bottom of the spectrum. From this and the multiscale analysis by Boutet de Monvel and Stollmann [Arch. Math. 80 (2003) 87] we infer Anderson localization (pure point spectrum and dynamical localization) for low energies. Our proof of Lifshits tail relies on spectral properties of Schr\"odinger operators with partially periodic potentials. In particular, we show that the lowest energy band of such operators is parabolic.

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