Wave Propagation in Periodic Media

Book Series: Progress in Computational Physics (PiCP)

Volume 1

by

Matthias Ehrhardt

DOI: 10.2174/97816080515021100101
eISBN: 978-1-60805-150-2, 2010
ISBN: 978-1-60805-383-4
ISSN: 1879-4661 (Print)



Indexed in: EBSCO, Ulrich's Periodicals Directory.

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Landau-Zener Phenomenon on a Double of Weakly Interacting Quasi- 2d Lattices

- Pp. 1-6 (6)

N. Bagraev, G. Martin and B. Pavlov

Abstract

The dynamics of a single electron is considered on a periodic square lattice constructed of rhomboidal quantum wells interacting via narrow links. The spectral structure of bands and gaps of the lattice is derived from an accurate analysis of Bloch waves, based on DN- maps of the quantum wells. For periodic lattice with rhomboidal periods, a solvable model, is constructed based on a rational approximation of DN- maps of the quantum wells by establishing a communication between them via partial boundary conditions emulating the covalent bonds. In the case of the corresponding double periodic lattice, the weak interaction of the two parallel periodic quasi-2d sub-lattices defines, due to the 2d Landau- Zener effect, a high mobility of the corresponding charge carriers in certain direction on the quasi-momenta plane.

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