Abstract
Based on Khodas et al (2004 Phys. Rev. Lett. 92 086602), we propose a device acting like a controllable prism for an incident spin. The device is a large quantum well where Rashba and Dresselhaus spin-orbit interactions are present and controlled by the plunger gate potential, the electric field and the barrier height. A totally destructive interference can be manipulated externally between the Rashba and Dresselhaus couplings. The spin-dependent transmission/reflection amplitudes are calculated as the control parameters are changed. The device operates as a spin prism/converter/filter in different regimes and may stimulate research in promising directions in spintronics in analogy with linear optics.
| Original language | English |
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| Article number | 026016 |
| Journal | Journal of Physics Condensed Matter |
| Volume | 21 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2009 |
| Externally published | Yes |