科研之友
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摘要
We propose a method of realizing an effective beam splitter for Dirac-Weyl fermions through the Goos-Hanchen-like shift. It is implemented via the birefringence of a wave packet of pseudospin-3/2 Dirac-Weyl fermions impinging upon a potential barrier. It is shown that experimentally observable spatial separation between the transmitted fermions with helicity-1 /2 and 3/2 can be generated by the Goos-Hanchen-like shift. The dependence of Goos-Hanchen-like shift and the corresponding transmission probability on the incident angle, the height and width of the potential barrier are carefully studied.
