Development of STM combined with synchrotron-radiation light source and its application to elemental analysis and spin observation
STM结合同步辐射光源的研制及其在元素分析和自旋观测中的应用
基本信息
- 批准号:14350016
- 负责人:
- 金额:$ 9.66万
- 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:2002
- 资助国家:日本
- 起止时间:2002 至 2003
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
We have developed an ultrahigh vacuum (UHV) STM system with which we can take atomically resolved STM images under an Iiradiation of synchrotron radiation light source. In order to do that, we designed an anti-vibration system including a vibration-isolation table which can be fitted in a narrow space of beamline. Since sites of beamlines in synchrotron-radiation light source are usually quite noisy electrically and mechanically, which is completely inappropriate for STM, we needed to consider carefully to avoid the noises to disturb the operation of STM, and successfully took atomically resolved STM images of the Si(111)7x7 surface under the irradiation.We also succeeded in taking adsorption spectra of the sample element by using the probe tip as a detector; it was found that the photoinduced current increases when the irradiated light energy is above 101eV, an adsorption edge of Si 2p, demonstrating a possibility that the STM tip can detect photoelectron emitted from core states of sample. Compared with the previous work done with a X-ray tube, the photoinduced current by the synchrotron is larger by a factor of more than 100. High intensity of the light and tunability of a light energy to that of a high adsorption crosssection are the main reasons for the high detection.After an modificatIon of the measurement system, we could also measure the photoinduced current quantitatively. From the quantitative measurement we characterized a spatial resolution of this elemental detection method by using a sample with a mixture of Au-induced 5x2 and Si7x7 surfaces and a Si substrate on which 2-micron size aluminum dots are regularly arranged. We also developed a method to focus the detection area on the tip for improving the spatial resolution by coating the tip with an insulating polymer and found successfully working.
我们研制了一种超高真空(UHV) STM系统,可以在同步辐射光源的照射下拍摄原子分辨STM图像。为此,我们设计了一个包括隔振台在内的抗振系统,该系统可以安装在狭窄的梁线空间内。由于同步辐射光源中光束线的位置通常具有较大的电气和机械噪声,这完全不适合STM,因此我们需要仔细考虑避免噪声干扰STM的运行,并成功地拍摄了辐照下Si(111)7x7表面的原子分辨STM图像。我们还成功地利用探针尖端作为检测器,获得了样品元素的吸附光谱;当辐照光能大于101eV (Si 2p的吸附边)时,光感应电流增大,表明STM尖端有可能探测到样品核心态发射的光电子。与以前用x射线管所做的工作相比,同步加速器产生的光感应电流要大100倍以上。光的高强度和光能对高吸附截面的可调性是高检出率的主要原因。通过对测量系统的改进,我们也可以定量地测量光感应电流。通过定量测量,我们表征了该元素检测方法的空间分辨率,该方法使用了含有au诱导的5x2和Si7x7表面的混合样品和有2微米大小的铝点排列的Si衬底。我们还开发了一种将检测区域集中在尖端的方法,通过在尖端涂覆绝缘聚合物来提高空间分辨率,并发现成功工作。
项目成果
期刊论文数量(6)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
T.Matsushima et al.: "Development and trial measurement of synchrotron-radiation-light-illuminated scanning-tunneling-microscope"Review of Scientific Instruments. (in press). 75 (2004)
T.Matsushima 等:“同步辐射光照明扫描隧道显微镜的开发和试验测量”科学仪器评论。
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T.Matsushima et al.: "Development and trial measurement of synchrotron-radiation-light- illuminated scanning-tunneling-microscope"Review of Scientific Instruments. 75,6月号(印刷中). (2004)
T. Matsushima 等人:“同步辐射光照明扫描隧道显微镜的开发和试验测量”科学仪器评论 75,6 月号(2004 年出版)。
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T.Matsushima: "Development and trial measurement of synchrotron-radiation- light-illuminated scanning-tunneling-microscope"Review of Scientific Instruments. 75,5月号(掲載予定). (2004)
T.Matsushima:“同步辐射光照明扫描隧道显微镜的开发和试验测量”科学仪器评论 75,5 月号(待出版)。
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HASEGAWA Yukio其他文献
金属ナノ粒子の光機能とサイズ依存性
金属纳米颗粒的光学功能和尺寸依赖性
- DOI:
- 发表时间:
2019 - 期刊:
- 影响因子:0
- 作者:
Sumiyoshi Akinobu;Chiba Yusuke;Matsuoka Ryota;Noda Takumu;Nabeshima Tatsuya;HASEGAWA Yukio;立間 徹 - 通讯作者:
立間 徹
高V含有量なKeggin型W-Vヘテロポリ酸の合成とその解析
高V含量Keggin型W-V杂多酸的合成与分析
- DOI:
- 发表时间:
2021 - 期刊:
- 影响因子:0
- 作者:
HAZE Masahiro;YOSHIDA Yasuo;HASEGAWA Yukio;川村 美紗希・石川 理史・定金 正洋・上田 渉 - 通讯作者:
川村 美紗希・石川 理史・定金 正洋・上田 渉
Future in Research Explored by Probe Microscopy
探针显微镜探索研究的未来
- DOI:
10.1380/vss.61.609 - 发表时间:
2018 - 期刊:
- 影响因子:0
- 作者:
青木千佳;石田拓也;立間 徹;HASEGAWA Yukio - 通讯作者:
HASEGAWA Yukio
Scanning Tunneling Microscopy Data Analysis Using Sparse Modeling
使用稀疏建模进行扫描隧道显微镜数据分析
- DOI:
10.1380/vss.65.78 - 发表时间:
2022 - 期刊:
- 影响因子:0
- 作者:
HAZE Masahiro;YOSHIDA Yasuo;HASEGAWA Yukio - 通讯作者:
HASEGAWA Yukio
Purpose of SPM Special Issue ; “Frontier in Nano Science by Scanning Probe Microscopy”
SPM 特刊的目的;“扫描探针显微镜的纳米科学前沿”
- DOI:
10.1380/vss.61.630 - 发表时间:
2018 - 期刊:
- 影响因子:0
- 作者:
Sumiyoshi Akinobu;Chiba Yusuke;Matsuoka Ryota;Noda Takumu;Nabeshima Tatsuya;HASEGAWA Yukio - 通讯作者:
HASEGAWA Yukio
HASEGAWA Yukio的其他文献
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{{ truncateString('HASEGAWA Yukio', 18)}}的其他基金
Scanning tunneling microscopy on proximity effects at superconductor/ferromagnetic interfaces
扫描隧道显微镜研究超导/铁磁界面的邻近效应
- 批准号:
25286055 - 财政年份:2013
- 资助金额:
$ 9.66万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Real-space observation of vortices and proximity effects on nano-size superconductors
纳米超导体涡旋和邻近效应的实空间观测
- 批准号:
21360018 - 财政年份:2009
- 资助金额:
$ 9.66万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Precise measurements of electrostatic potential using scanning probe microscopy
使用扫描探针显微镜精确测量静电势
- 批准号:
19310065 - 财政年份:2007
- 资助金额:
$ 9.66万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
visualization of Fermi level pinning sites at metal semiconductor interfaces
金属半导体界面费米能级钉扎位点的可视化
- 批准号:
13555088 - 财政年份:2001
- 资助金额:
$ 9.66万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
nano-scale real-space observation of surface two-dimensional electron system under ultra-low temperature and magnetic field
超低温磁场下表面二维电子系统纳米级实空间观测
- 批准号:
12450020 - 财政年份:2000
- 资助金额:
$ 9.66万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
相似海外基金
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