De Leo S., Ducati G., and Giardino S., Quaternionic Dirac Scattering, J Phys Math 2015, 6:1, DOI: http://dx.doi.org/10.4172/2090-0902.1000130, Open Access, download: http://www.ime.unicamp.br/~deleo/Pub/p82.pdf .
Abstract: The scattering of a Dirac particle has been studied for a quaternionic potential step. In the potential region an additional diffusion solution is obtained. The quaternionic solution which generalizes the complex one presents an amplification of the reflection and transmission rates. A detailed analysis of the quaternionic spinorial velocities shed new light on the additional solution. For pure quaternionic potentials, the interesting and surprising result of total transmission is found. This suggests that the presence of pure quaternionic potentials cannot be seen by analyzing the reflection or transmission rates. It has been observed by measuring the mean value of some operator