2013 Fiscal Year Final Research Report
Formation and transport of persistent spin helix state in GaAs/AlGaAs quantum wires
| Project/Area Number |
24656003
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Applied materials science/Crystal engineering
|
|---|
| Research Institution | University of Tsukuba |
|---|
Principal Investigator |
OHNO Yuzo 筑波大学, 数理物質系, 教授 (00282012)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
YAMANOUCHI Michihiko 東北大学, 電気通信研究所, 助教 (40590899)
|
|---|
| Project Period (FY) |
2012-04-01 – 2014-03-31
|
| 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 |
|---|
| 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.
|
