Scattering of a Dirac electron on a mass barrier
| Autor: | M. Ramezani Masir, François M. Peeters, A. Matulis |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Physics
Condensed Matter - Mesoscale and Nanoscale Physics Scattering Network packet Wave packet FOS: Physical sciences Atomic and Molecular Physics and Optics Computational physics Computer Science::Performance symbols.namesake Fourier transform Surface wave Quantum mechanics Wave shoaling Mesoscale and Nanoscale Physics (cond-mat.mes-hall) symbols Computer Science::Networking and Internet Architecture Relativistic wave equations Wave vector |
| Zdroj: | Physical review : A : atomic, molecular and optical physics |
| ISSN: | 1094-1622 |
| Popis: | The interaction of a wave packet (and in particular the wave front) with a mass barrier is investigated in one dimension. We discuss the main features of the wave packet that are inherent to two-dimensional wave packets, such as compression during reflection, penetration in the case when the energy is lower than the height of the barrier, waving tails, precursors, and the retardation of the reflected and penetrated wave packets. These features depend on the wave-packet envelope function which we demonstrate by considering the case of a rectangular wave packet with sharp front and trailing edges and a smooth Gaussian wave packet. The method of Fourier integral for obtaining the nonstationary solutions is used. 12 pages, 9 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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