Formation and transport of persistent spin helix state in GaAs/AlGaAs quantum wires
| Project/Area Number |
24656003
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied materials science/Crystal engineering
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| Research Institution | University of Tsukuba |
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Principal Investigator |
OHNO Yuzo 筑波大学, 数理物質系, 教授 (00282012)
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| Co-Investigator(Kenkyū-buntansha) |
YAMANOUCHI Michihiko 東北大学, 電気通信研究所, 助教 (40590899)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | スピントロニクス / 永久スピン旋回状態 / 顕微カー回転測定 / GaAs / スピン緩和 / スピン永久旋回状態 / スピン・軌道相互作用 / GaAs/AlGaAsヘテロ構造 / 動的核スピン分極 |
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| Research Abstract |
Spin-orbit interaction (SOI) plays important roles in the field of spintronics because the SOI field enables for spin manipulation and causes spin relaxation. In this study, using time-resolved Kerr rotation measurement, we investigate ensemble spin dynamics in wires made from a modulation-doped AlGaAs/GaAs QW in which both Dresselhaus and Rashba SOIs coexist. In addition, we perform the time- and spatially-resolved Kerr rotation measurement to observe the spatiotemporal evolution of photoexcited spins, and demonstrated gate-controlled spin distribution of a two-dimensional electron gas with a top gate electrode.
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Report
(3 results)
Research Products
(14 results)
