A Study on Spin-Polarized Tunneling Phenomena and its Applications.

自旋极化隧道现象及其应用的研究。

• 批准号: 06452116
• 负责人: MUKASA Koichi
• 金额: $ 4.42万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06452116/
• 关键词: Spin polarization; STM; SP-STM; Tunneling phenomena; Micro magnetism; Surface; モット・スピン検出器; 集束イオンビーム; 表面磁性

We have studied the quantum tunneling phenomena that are the basic research of developing SP-STM.Our SP-STM can observe micro magnetic states of surfaces without an affection of the tip.(1) We succeeded in observing the spin polarized tunneling current between GaAs sample and Ni tip by STM in 1992.(2) The UHV-STM system has been developed and it becomes clear that the tunneling current depends on the polarity of the incident light to the GaAs sample and the magnetization of the Ni tip. A photovoltaic effect was observed and STS was measured, so we can understand the energy band structure and spin polarization of these materials.(3) We are also developing a quantum well structure, a technology of processing to the tip by FIB and Mott spin analyzer.

我们研究了量子隧穿现象，这是发展SP-STM的基础，我们的SP-STM可以在不受针尖影响的情况下观察表面的微观磁性状态。(1)1992年我们用STM成功地观察到GaAs样品与Ni针尖之间的自旋极化隧穿电流。(2)已经开发的UHV-STM系统，它变得清楚，隧道电流依赖于入射光的极性到GaAs样品和Ni尖的磁化。观察到了光伏效应，并测量了STS，因此我们可以了解这些材料的能带结构和自旋极化。(3)我们还在开发量子阱结构，这是一种通过FIB和Mott自旋分析仪加工尖端的技术。

项目成果

K.Mukasa, K.Sueoka, H.Hasegawa, Y.Taduke, H.Hayakawa: "Spin-Polarized STM and its Family." Materials Science & Engineering. B31. 69-76 (1995)

K.Mukasa、K.Sueoka、H.Hasekawa、Y.Taduke、H.Hayakawa：“自旋偏振 STM 及其家族”。

Y.Umehara, Y.Ogiso, K.Chihara and K.Mukasa: "Method for evaluating sharpness of tip apex of a cantilever for the atomic force microscope." Rev.Sci.Instrum.66(1). 269-270 (1995)

Y.Umehara、Y.Ogiso、K.Chihara 和 K.Mukasa：“评估原子力显微镜悬臂尖端锐度的方法”。

Y.Umehara,Y.Ogiso,K.Chihara and K.Mukasa: "Method for evaluating sharpness of tip apex of a cantilever for the atomic force microscope." Rev.Sci.Instrum.66(1). 269-270 (1995)

Y.Umehara、Y.Ogiso、K.Chihara 和 K.Mukasa：“评估原子力显微镜悬臂尖端锐度的方法”。

Y.Sasaki, T.Kamei, T.Yosimoto, T.Iwata, K.Suzuki, K.Sueoka, K.Mukasa: "Study on Tips by MBE." Journal of the Vacuum Society of Japan. 38 (3). 401-403 (1995)

Y.Sasaki、T.Kamei、T.Yosimoto、T.Iwata、K.Suzuki、K.Sueoka、K.Mukasa：“MBE 的技巧研究”。

K.Mukasa,K.Sueoka,H.Hasegawa,Y.Taduke,H.Hayakawa: "Spin-Polarized STM and its Family" Materials Science & Engineering. B31. 69-76 (1995)

K.Mukasa、K.Sueoka、H.Hasekawa、Y.Taduke、H.Hayakawa：“自旋偏振 STM 及其家族”材料科学