Direct mapping of photoexcited local spins in a modulation-doped GaAs/AlGaAs wires

Jun Ishihara; Yuzo Ohno; Hideo Ohno

doi:10.7567/JJAP.53.04EM04

Direct mapping of photoexcited local spins in a modulation-doped GaAs/AlGaAs wires

Jun Ishihara, Yuzo Ohno, Hideo Ohno

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Abstract

We directly measured the spatiotemporal evolution of photoexcited local spins in wires made from a modulation-doped GaAs/AlGaAs quantum well by using a time- and spatially resolved Kerr microscopy. We observed the spatial pattern of spin-up and -down near the case of persistent spin helix (PSH) in [110] wires and the retention of the initial spin state in [110] wires which were designed such that the Dresselhaus and Rashba spin- orbit interaction are nearly equal to each other in magnitude.

Original language	English
Article number	04EM04
Journal	Japanese journal of applied physics
Volume	53
Issue number	4 SPEC. ISSUE
DOIs	https://doi.org/10.7567/JJAP.53.04EM04
Publication status	Published - 2014 Apr

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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abstract = "We directly measured the spatiotemporal evolution of photoexcited local spins in wires made from a modulation-doped GaAs/AlGaAs quantum well by using a time- and spatially resolved Kerr microscopy. We observed the spatial pattern of spin-up and -down near the case of persistent spin helix (PSH) in [110] wires and the retention of the initial spin state in [110] wires which were designed such that the Dresselhaus and Rashba spin- orbit interaction are nearly equal to each other in magnitude.",

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AU - Ohno, Hideo

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N2 - We directly measured the spatiotemporal evolution of photoexcited local spins in wires made from a modulation-doped GaAs/AlGaAs quantum well by using a time- and spatially resolved Kerr microscopy. We observed the spatial pattern of spin-up and -down near the case of persistent spin helix (PSH) in [110] wires and the retention of the initial spin state in [110] wires which were designed such that the Dresselhaus and Rashba spin- orbit interaction are nearly equal to each other in magnitude.

AB - We directly measured the spatiotemporal evolution of photoexcited local spins in wires made from a modulation-doped GaAs/AlGaAs quantum well by using a time- and spatially resolved Kerr microscopy. We observed the spatial pattern of spin-up and -down near the case of persistent spin helix (PSH) in [110] wires and the retention of the initial spin state in [110] wires which were designed such that the Dresselhaus and Rashba spin- orbit interaction are nearly equal to each other in magnitude.

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Direct mapping of photoexcited local spins in a modulation-doped GaAs/AlGaAs wires

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