title: A controllable spin prism.
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.
authors.affiliation: Department of Physics, Bilkent University, 06800 Ankara, Turkey. UNAM Material Science and Nanotechnology Institute, Bilkent University, 06800 Ankara, Turkey.
authors.forename: T
authors.initials: T
authors.lastname: Hakioğlu