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Title: All-electrical time-resolved spin generation and spin manipulation in n-InGaAs

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 [11{sup ¯}0] crystal axis creates a current-induced spin polarization (CISP) which is oriented in the plane of the sample. The subsequent electric field pulse along [110] 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.
Authors:
; ; ;  [1] ;  [2]
  1. 2nd Institute of Physics and JARA-FIT, RWTH Aachen University, D-52074 Aachen (Germany)
  2. Peter Grünberg Institut (PGI-9) and JARA-FIT, Forschungszentrum Jülich GmbH, D-52425 Jülich (Germany)
Publication Date:
OSTI Identifier:
22283174
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 6; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTALS; ELECTRIC FIELDS; FARADAY EFFECT; GALLIUM ARSENIDES; INDIUM ARSENIDES; MAGNETIC FIELDS; N-TYPE CONDUCTORS; PRECESSION; PULSES; SPIN; SPIN ORIENTATION; TIME RESOLUTION