Quantum rings as electron spin beam splitters

2005/07/31 by Péter Földi, Peter Foldi, Orsolya Kálmán +4 · 2 citations
Engineering · Physics and Astronomy · #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #Semiconductor materials and devices #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.73.155325

published as Phys. Rev. B 73, 155325, (2006) · 4 pages, 3 figures; minor changes

openalex publication_date 2006/04/24 · arxiv created 2006/05/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Quantum interference and spin-orbit interaction in a one-dimensional mesoscopic semiconductor ring with one input and two output leads can act as a spin beam splitter. Different polarization can be achieved in the two output channels from an originally totally unpolarized incoming spin state, very much like in a Stern-Gerlach apparatus. We determine the relevant parameters such that the device has unit efficiency.

Citations

• Electron spin interferometry using a semiconductor ring structure
• Modulating unpolarized current in quantum spintronics: Visibility of spin-interference effects in multichannel Aharonov-Casher mesoscopic rings
• Filtering spin with tunnel-coupled electron wave guides
• Spintronics: Fundamentals and applications
• Spin Hall Current Driven by Quantum Interferences in Mesoscopic Rashba Rings

Cited by

• Duality in Entanglement Enabling a Test of Quantum Indistinguishability Unaffected by Interactions
• Quantum mechanical evolution operator in the presence of a scalar linear potential: discussion on the evolved state, phase shift generator and tunneling