2012/07/31 by T. Nakajima, Kuan-Ting Lin, Nakajima, T. +4
Physics and Astronomy · #FOS: Physical sciences #Magnetic properties of thin films #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Quantum Physics (quant-ph) #Quantum and electron transport phenomena #Surface and Thin Film Phenomena #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.48550/arxiv.1207.7243
openalex publication_date 2012/07/31 · arxiv created 2012/08/02 · arxiv updated 2012/08/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Electrical control and detection of spin precession are experimentally demonstrated by using spin-resolved edge states in the integer quantum Hall regime. Spin precession is triggered at a corner of a biased metal gate, where electron orbital motion makes a sharp turn leading to a nonadiabatic change in the effective magnetic field via spin-orbit interaction. The phase of precession is controlled by the group velocity of edge-state electrons tuned by gate bias voltage: A spin-FET device is thus realized by all-electrical means, without invoking ferromagnetic material. The effect is also interpreted in terms of a Mach-Zehnder-type spin interferometer.