Ferromagnet/Semiconductor Hybrid Materials : Epitaxial Growth and Applications

铁磁体/半导体混合材料：外延生长和应用

• 批准号: 11694131
• 负责人: TANAKA Masaaki
• 金额: $ 3.07万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11694131/
• 关键词: MnAs; GaMnAs; magnetic semiconductor; magneto-optical effect; optical isolator; magnetic tunnel junction; tunneling magneto-resistance (TMR); granular structure; 磁性体; 半導体ハイブリッド材料; 分子線エピタキシー; ErAs; 半導体ハイブリッド系材料; 量子へテロ構造; MnGa; テンプレート法

We have studied and established the fabrication technologies of ferromagnet/semiconductor hybrid materials; 1) III-V-based ferromagnetic semiconductors which contains sizable amount of magnetic ions (Mn) and their heterostructures, and 2) ferromagnetic-metal/III-V semiconductor heterostructures, by using molecular beam epitaxy. Furthermore, we investigated their structural, electronic, optical, and magnetic properties, and realized unique and useful properties that cannot be seen in the conventional semiconductor or magnetic materials alone. These properties we found are shown to be applicable to some future "spintronic" devices.

研究并建立了铁磁体/半导体杂化材料的制备工艺；1)含有大量磁性离子（Mn）的III-V型铁磁半导体及其异质结构；2)利用分子束外延的铁磁金属/III-V型半导体异质结构。此外，我们研究了它们的结构、电子、光学和磁性，并实现了传统半导体或磁性材料中无法看到的独特和有用的特性。我们发现的这些特性被证明适用于一些未来的“自旋电子”设备。

项目成果

M,Tanaka.K.Abe,K.Tamura,H.Haruyama,T.Nishinaga: "Vertical Transport in Epitaxial Semimetal (ErAs)/Semiconductor(III-V) Quantum Heterostructures"J.Magnetism & Magnetic Materials. 198. 581-583 (1999)

M,Tanaka.K.Abe,K.Tamura,H.Haruyama,T.Nishinaga：“外延半金属（ErAs）/半导体（III-V）量子异质结构中的垂直输运”J.Magnetism

M.Tanaka, H.Shimizu, M.Miyamura: "Enhancement of Magneto-optical Effect in a GaAs : MnAs Hybrid Structure Sandwiched by GaAs/AlAs Distributed Bragg Reflectors : Epitaxial Semiconductor-based Magneto-photonic Crystal"Journal of Crystal Growth. Vol.227-228.

M.Tanaka、H.Shimizu、M.Miyamura：“GaAs 中磁光效应的增强：夹有 GaAs/AlAs 分布式布拉格反射器的 MnAs 混合结构：基于外延半导体的磁光子晶体”晶体生长杂志。

H. Shimizu, M. Miyamura, and M. Tanaka: "Enhanced Magneto-Optical Effect in a GaAs:MnAs Nanoscale Hybrid Structure Combined with GaAs/AlAs Distributed Bragg Reflectors"J. Vac. Sci. & Technol.. B18. 2063-2065 (2000)

H. Shimizu、M. Miyamura 和 M. Tanaka：“GaAs:MnAs 纳米级混合结构与 GaAs/AlAs 分布式布拉格反射器相结合的增强磁光效应”J。

S. Sugahara and M. Tanaka: "Atomic-Scale Surface Morphology of Epitaxial Ferromagnetic MnAs Thin Films on Vicinal GaAs(111)B Substrates"J. Appl. Phys.. 89. 6677-6679 (2001)

S. Sugahara 和 M. Tanaka：“邻位 GaAs(111)B 衬底上外延铁磁 MnAs 薄膜的原子尺度表面形态”J。

M. Tanaka (Invited paper): "Ferromagnet/Semiconductor Hybrid Structures Grown by Molecular Beam Epitaxy"J. Crystal Growth. 201/202. 660-669 (1999)

M. Tanaka（特邀论文）：“Ferromagnet/Semiconductor Hybrid Structures Grown by Molecular Beam Epitaxy”J。