We demonstrate all-electrical spin generation and subsequent manipulation by two successive electric field pulses in an n-InGaAs heterostructure in a time-resolved experiment at zero external magnetic field. The first electric field pulse along the crystal axis creates a current-induced spin polarization (CISP) which is oriented in the plane of the sample. The subsequent electric field pulse along  generates a perpendicular magnetic field pulse leading to a coherent precession of this spin polarization with 2-dimensional electrical control over the final spin orientation. Spin precession is probed by time-resolved Faraday rotation. We determine the build-up time of CISP during the first field pulse and extract the spin dephasing time and internal magnetic field strength during the spin manipulation pulse.
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Research Article| February 11 2014
All-electrical time-resolved spin generation and spin manipulation in n-InGaAs
I. Stepanov, S. Kuhlen, M. Ersfeld, M. Lepsa, B. Beschoten; All-electrical time-resolved spin generation and spin manipulation in n-InGaAs. Appl. Phys. Lett. 10 February 2014; 104 (6): 062406. https://doi.org/10.1063/1.4864468
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