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Type: Artigo de periódico
Title: Planar Dirac diffusion
Author: De Leo, S
Rotelli, P
Abstract: We present the results of the planar diffusion of a Dirac particle by step and barrier potentials, when the incoming wave impinges at an arbitrary angle with the potential. Except for right-angle incidence this process is characterized by the appearance of spin flip terms. For the step potential, spin flip occurs for both transmitted and reflected waves. However, we find no spin flip in the transmitted barrier result. This is surprising because the barrier result may be derived directly from a two-step calculation. We demonstrate that the spin flip cancellation indeed occurs for each "particle" (wave packet) contribution.
Country: EUA
Editor: Springer
Rights: fechado
Identifier DOI: 10.1140/epjc/s10052-009-1060-9
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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