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Contour Plot with Optical Density of States of a Superlattice

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This graph shows the calculated optical density of the states of a superlattice as function of the photon energy and the electric field. At small electric field values, Wannier-Stark ladders emerge. At large electric field values, Zener tunneling sets in, destroying the Wannier-Stark ladders.

Submitted by Dr. Stephan Glutsch, a researcher at Friedrich Schiller University Jena, Institute of Solid State Theory and Theoretical Optics, Germany.

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