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Title: Antireflection coatings from analogy between electron scattering and spin precession
Author: Sprung, Donald W. L.
Morozov, Gregory V.
Martorell Domenech, Juan
Keywords: Electromagnetisme
Issue Date: 15-Apr-2003
Publisher: American Institute of Physics
Abstract: We use the analogy between scattering of a wave from a potential, and the precession of a spin-half particle in a magnetic field, to gain insight into the design of an antireflection coating for electrons in a semiconductor superlattice. It is shown that the classic recipes derived for optics are generally not applicable due to the different dispersion law for electrons. Using the stability conditions we show that a Poisson distribution of impedance steps is a better approximation than is a Gaussian distribution. Examples are given of filters with average transmissivity exceeding 95% over an allowed band.
Note: Reproducció del document publicat a:
It is part of: Journal of Applied Physics, 2003, vol. 93, núm. 8, p. 4395-4406
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ISSN: 0021-8979
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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