ATOM MAMIPULATION AND EVALUATION OF PROBING TIPS

原子操纵和探测尖端的评估

基本信息

批准号：
05245107
负责人：
NISHIKAWA Osamu
金额：
$ 87.42万
依托单位：
KANAZAWA INSTITUTE OF TECHNOLOGY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research on Priority Areas
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05245107/
关键词：
field emission microscope (FEM)field ion microscope (FIM)atom manipulation electron spectroscopy scanning tunneling spectroscopy (STS)atom probe (AP)field emission electron spectroscopy (FEES)scanning tunneling microscope (STM)分光(STM

项目摘要

The main subjects of this research on priority areas are the clarification of tunneling mechanism of electrons tunneling utilizing various high resolution microscoppies such as field emission microscopy (FEM), field ion microscopy (FIM) and scanning tunneling microscopy (STM). The electronic states of surfaces are investigated by scanning tunneling spectroscopy (STS) and field emission electron spectroscopy (FEES). However, it has been realized that the tunneling probability between a surface atom and an apex atom of a scanning tip of STM varies with the electronic state and atomic arrangement of the apex. Accordingly, the major aim of this research division is atomic level inspection of the constituent distributions of tip apexes with an atom probe (AP) and of electronic state with FEES and STS.The mechanism of atom manipulation is also studied FIM and STM.Results of this research are listed below.(1) The FEM/FIM which can introduce imaging plates (IP) was constructed in order to investigate the tunneling probability quantitatively.(2) A scanning atom probe (SAP) was developed to mass analyze 2-dimensional specimen surfaces. The mass analysis of artificially made diamond was mass analyzed.(3) High resolution FEES was constructed and detected the atomic and lattice vibrations at the tip apex were detected at 4K.(4) The electronic states of semicondutor surfaces were controlled by depositing foreign atoms to lattice steps utilizing atom manipulation technique.(5) Tunneling characteristics of phtalocyanines was investigated examining the binding state with the substrate and measuring I-V curves.(6) Self-organized quantum dot structures formed in GaP/InP short period superlattices were investigated by STM/STS.

这项优先领域研究的主要课题是利用场发射显微镜（FEM）、场离子显微镜（FIM）和扫描隧道显微镜（STM）等各种高分辨率显微镜阐明电子隧道的隧道机制。通过扫描隧道光谱（STS）和场发射电子光谱（FEES）研究表面的电子态。然而，人们已经认识到，STM扫描尖端的表面原子和顶点原子之间的隧道概率随着顶点的电子态和原子排列而变化。因此，该研究部门的主要目标是用原子探针 (AP) 对尖端顶点的成分分布进行原子水平检查，并用 FEES 和 STS 对电子态的成分分布进行原子水平检查。还研究了 FIM 和 STM 原子操纵的机制。 (1)构建了可引入成像板(IP)的FEM/FIM以定量研究隧道概率。(2)开发了扫描原子探针(SAP)以对二维进行质量分析标本表面。对人造金刚石进行了质量分析。(3)构建了高分辨率FEES并在4K下检测了尖端顶点的原子和晶格振动。(4)通过沉积外来原子控制半导体表面的电子态(5)研究了酞菁的隧道特性，检查与基底的结合状态并测量I-V曲线。(6)在中形成的自组织量子点结构通过 STM/STS 研究了 GaP/InP 短周期超晶格。