Physics and application of single self-assembled InAs quantum dot transistors

单自组装InAs量子点晶体管的物理与应用

• 批准号: 19560338
• 负责人: SHIBATA Kenji
• 金额: $ 2.91万
• 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 (C)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19560338/
• 关键词: 電子デバイス・集積回路; 量子ドット; 単一電子トランジスタ; 超伝導; 強磁性; テラヘルツ電磁波; 自己組織化; インジウム砒素; フォノン; 近藤効果

We have fabricated lateral electron tunneling structures by forming nanogap electrodes directly contacting single self-assembled InAs quantum dots (QDs) grown on GaAs surfaces. The fabricated junctions showed single electron tunneling behaviors and exhibited clear shell fillings. When quantum mechanical coupling between electrons in the QDs and the electrodes was strong, the Kondo effect was observed up to the very high temperature of T_K～80K.Owing to the good compatibility of InAs QDs with metals, further functionalities can be added to the structure by using superconducting or ferromagnetic nanogap electrodes.

我们通过在GaAs表面形成直接接触单个自组装InAs量子点（QD）的纳米间隙电极，制备了横向电子隧穿结构。所制备的结表现出单电子隧穿行为，并表现出清晰的壳层填充。当量子点中的电子与电极之间的量子力学耦合较强时，在T_K~ 80 K的高温下都能观察到近藤效应.由于InAs量子点与金属的良好相容性，可以通过使用超导或铁磁纳米间隙电极来增加结构的功能.

项目成果

Physics and apphcation of single quantum dots coupled to metallic nanogap electrodes

单量子点耦合金属纳米间隙电极的物理及应用

• 发表时间: 2008
• 作者: K. Shibata;M. Jung;C. Buizert;K. Hamaya;A. Oiwa;K. Hirakawa;T. Machida. and S. Tarucha
• 通讯作者: T. Machida. and S. Tarucha

Physics and applications of single quantum dots coupled to metallic nanogap electrodes

单量子点与金属纳米间隙电极耦合的物理和应用

• 发表时间: 2008
• 作者: K. Shibata;M. Jung;C. Buizert;K. Hamaya;A. Oiwa;T. Machida;S. Tarucha;K. Hirakawa
• 通讯作者: K. Hirakawa

Spin-related current suppression in a semiconductor quantum dot spin-diode structure.

• DOI: 10.1103/physrevlett.102.236806
• 发表时间: 2009-05
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: Kohei Hamaya;M. Kitabatake;Kenji Shibata;Minkyung Jung;Shigeyuki Ishida;Tomoyasu Taniyama;Kazuhiko Hirakawa;Y. Arakawa;T. Machida

Fabrication of Single-Electron Transistor Composed of a Self-Assembled Quantum Dot and Nanogap Electrode by Atomic Force Microscope Local Oxidation

原子力显微镜局部氧化制备自组装量子点和纳米间隙电极组成的单电子晶体管

• 发表时间: 2010
• 期刊: Appl.Phys.Exp. 3
• 作者: R.Moriya;H.Kobayashi;K.Shibata;S.Masubuchi;K.Hirakawa;S.Ishida;Y.Arakawa;T.Machida
• 通讯作者: T.Machida

Kondo universality for a quantum dot coupled to superconducting leads

量子点与超导引线耦合的近藤通用性

• 发表时间: 2007
• 期刊: Phys. Rev. Lett. 99
• 作者: C. Buizert;A. Oiwa;K. Shibata;K. Hirakawa;S. Tarucha
• 通讯作者: S. Tarucha