Journal
PHYSICAL REVIEW B
Volume 83, Issue 19, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.83.195409
Keywords
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Funding
- National Natural Science Foundation of China [60806041, 60877055]
- Shanghai Leading Academic Discipline Program [S30105]
- Juan de la Cierva Programme
- Basque Government [IT472-10]
- Ministerio de Ciencia e Innovacion [FIS2009-12773-C02-01]
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The quantum Goos-Hanchen shift for ballistic electrons is investigated in a parabolic potential well under a uniform vertical magnetic field. It is found that the Goos-Hanchen shift can be negative as well as positive, and becomes zero at transmission resonances. The beam shift depends not only on the incident energy and incidence angle, but also on the magnetic field and Landau quantum number. Based on these phenomena, we propose an alternative way to realize the spin beam splitter in the proposed spintronic device, which can completely separate spin-up and spin-down electron beams by negative and positive Goos-Hanchen shifts.
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