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|Type:||Artigo de periódico|
|Title:||A study of transit times in Dirac tunneling|
|Author:||De Leo, S|
|Abstract:||Based on the Dirac equation, the behavior of relativistic electrons which tunnel a potential barrier of height V-0 for incoming energies between V-0 and V-0 + m is studied by using the wave packet formalism. The choice of this incoming energy zone guarantees that only electrons participate in the tunneling process. In the opaque limit, as shown in a previous analysis, the transit velocity is proportional to the barrier width and for relativistic potential tends to a constant value greater than c. In this paper, a new numerical study shows a very surprising result: superluminal transmissions are also evident for thin barriers.|
|Editor:||Iop Publishing Ltd|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
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