Spin separation in cyclotron motion

Details Spin separation in cyclotron motion Spin separation in cyclotron motion

2004-03-26

arxiv.org/abs/cond-mat/0403645v3

Physical Review Letters 93, 146601 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.93.146601

Charged carriers with different spin states are spatially separated in a two-dimensional hole gas. Due to strong spin-orbit interaction holes at the Fermi energy have different momenta for two possible spin states travelling in the same direction and, correspondingly, different cyclotron orbits in a weak magnetic field. Two point contacts, acting as a monochromatic source of ballistic holes and a narrow detector in the magnetic focusing geometry are demonstrated to work as a tunable spin filter.

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