Optical Control of Electron Spins in Hybrid Quantum Structures of Diluted Magnetic Semiconductors
稀磁半导体混合量子结构中电子自旋的光学控制
基本信息
- 批准号:17340090
- 负责人:
- 金额:$ 5.18万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2005
- 资助国家:日本
- 起止时间:2005 至 2006
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The objective of the research program is following:1.Designing and fabrication of new hybrid nanostructures composed of II-VI compound diluted magnetic semiconductors and magnetic metals.2.Study of optical spin injection and spin relaxation in the hybrid nanostructures of quantum dots and quantum wells for the application on spin electronic devices.We have fabricated, for the above objectives, the quantum structures and hybrid nanostructures with CdTe,CdSe,ZnTe,ZnSe and magnetic materials of Mn and Co by using molecular expitaxy and electron beam lithography. Fabricated quantum nanostructures are studied by femtosecond laser spectroscopy by applying high magnetic fields. Spin injection processes of electrons, holes and excitons are investigated in the quantum wells and quantum dots of ZnMnSe-ZnSe,CdMnSe-CdSe and CdMnTe-CdTe systems. Transient photoluminescence of excitons shows fast spin injection and spin relaxation processes in the quantum structures induced by the magnetic field. Ultrafast spin dynamics of carriers is investigated in the diluted magnetic double quantum wells by transient pump-probe spectroscopy. The spin injection dynamics of electrons and holes are clarified in femtosecond time domain. Hybrid nanostructures with the diluted magnetic semiconductors and the magnetic metals were fabricated by electron beam lithography technique. The diluted magnetic quantum disks in the hybrid structures show the Zeeman splitting without applying external magnetic field, which verifies the affection the ferromagnetic nano-scale magnets neighboring to the quantum disks. The obtained results in the present research have high possibilities for spin electronic applications.
该研究项目的目标如下:1.设计和制备由II-VI化合物稀磁半导体和磁性金属组成的新型混合纳米结构。2.研究量子点和量子阱混合纳米结构中的光学自旋注入和自旋弛豫,以应用于自旋电子器件。针对上述目标,我们制备了量子结构和混合纳米结构。 采用分子外延和电子束光刻技术,以 CdTe、CdSe、ZnTe、ZnSe 和 Mn、Co 磁性材料为材料。通过施加高磁场,通过飞秒激光光谱研究制造的量子纳米结构。研究了ZnMnSe-ZnSe、CdMnSe-CdSe和CdMnTe-CdTe体系的量子阱和量子点中电子、空穴和激子的自旋注入过程。激子的瞬态光致发光显示了磁场引起的量子结构中的快速自旋注入和自旋弛豫过程。通过瞬态泵浦探针光谱研究了稀磁双量子阱中载流子的超快自旋动力学。电子和空穴的自旋注入动力学在飞秒时域中得到阐明。通过电子束光刻技术制备了稀释磁性半导体和磁性金属的混合纳米结构。混合结构中的稀释磁性量子盘在不施加外部磁场的情况下表现出塞曼分裂,这验证了与量子盘相邻的铁磁纳米级磁体的影响。本研究取得的成果对于自旋电子学应用具有很大的可能性。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Density-dependent dynamics of exciton magnetic polarons in ZnMnSe/ZnSSe type-II quantum wells
ZnMnSe/ZnSSe II 型量子阱中激子磁极化子的密度依赖动力学
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Atsuko Kibayashi;Nobu Katayama;樹林 敦子;A.Murayama;A.Murayama;A.A.Toropov
- 通讯作者:A.A.Toropov
Spin-injection dynamics in a magnetic double quantum well studied by pump-probe absorption spectroscopy
通过泵浦探针吸收光谱研究磁性双量子阱中的自旋注入动力学
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Atsuko Kibayashi;Nobu Katayama;樹林 敦子;A.Murayama;A.Murayama;A.A.Toropov;K.Nishibayashi
- 通讯作者:K.Nishibayashi
Dynamical spin separation induced by spin-dependent type-II band alignment in a diluted magnetic double quantum well
稀释磁性双量子阱中自旋相关的 II 型能带排列诱导的动态自旋分离
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Atsuko Kibayashi;Nobu Katayama;樹林 敦子;A.Murayama;A.Murayama;A.A.Toropov;K.Nishibayashi;T.Koyama
- 通讯作者:T.Koyama
Spin dynamics in a diluted magnetic semiconductor quantum well studied by pump-probe absorption spectroscopy: Magnetic-field-induced suppression of electron-spin relaxation
- DOI:10.1063/1.2216111
- 发表时间:2006-06
- 期刊:
- 影响因子:4
- 作者:A. Murayama;K. Seo;K. Nishibayashi;I. Souma;Y. Oka
- 通讯作者:A. Murayama;K. Seo;K. Nishibayashi;I. Souma;Y. Oka
Nanoscale magnet for semiconductor spintronics
用于半导体自旋电子学的纳米级磁体
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Atsuko Kibayashi;Nobu Katayama;樹林 敦子;A.Murayama
- 通讯作者:A.Murayama
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OKA Yasuo其他文献
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{{ truncateString('OKA Yasuo', 18)}}的其他基金
Optical Spin Injection and Carrier Transport in Hybrid Nanostructures of Semiconductors and Magnetic Metals
半导体和磁性金属混合纳米结构中的光学自旋注入和载流子传输
- 批准号:
13450002 - 财政年份:2001
- 资助金额:
$ 5.18万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Fabrication of Spin Controlled Semiconductor Superstructures
自旋控制半导体上部结构的制造
- 批准号:
09244102 - 财政年份:1997
- 资助金额:
$ 5.18万 - 项目类别:
Grant-in-Aid for Scientific Research on Priority Areas
Fabrication and Study of Nanostructure Diluted Magnetic Semiconductors
纳米结构稀磁半导体的制备与研究
- 批准号:
08555001 - 财政年份:1996
- 资助金额:
$ 5.18万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Construction of Ultrashort Pulse Lasers and Spectroscopy System in UV and Blue Light Regions for the Study of New Semiconductor Superlattices
用于研究新型半导体超晶格的紫外和蓝光区域超短脉冲激光器和光谱系统的构建
- 批准号:
63850001 - 财政年份:1988
- 资助金额:
$ 5.18万 - 项目类别:
Grant-in-Aid for Developmental Scientific Research (B).
STUDY OF SUPER-THIN FILMS DEPOSITED ON SEMICONDUCTOR-SUBSTRATES BY BRILLOUIN SPECTROSCOPY OF SURFACE WAVES
表面波布里渊光谱研究半导体基底上沉积的超薄膜
- 批准号:
62550002 - 财政年份:1987
- 资助金额:
$ 5.18万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
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