Atomic spatial resolution spectroscopy in the THz spectral range

太赫兹光谱范围内的原子空间分辨率光谱

• 批准号: 23654099
• 负责人: UEHARA Yoichi
• 金额: $ 3.08万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23654099/
• 关键词: 表面・界面; 原子位置分解能; テラヘルツ分光; テラヘルツ; 走査トンネル顕微鏡; THz; 電子トンネル発光; STM; 微細領域分光計測

In order to confirm whether STM light is detectable in the THz spectral range, experimental investigations have been carried out. Light emission from the Sb2Te3 sample -W tip gap of a STM was successfully detected in the THz spectral range. This result shows that spectroscopic investigations with atomic spatial resolution in the THz spectral range are indeed possible, because the tunneling electron beam in STM, which excites the STM light emission, is well focused up to the atomic level.

为了确认STM光是否在THz光谱范围内是可检测的，已经进行了实验研究。在太赫兹光谱范围内成功地探测到了来自Sb_2Te_3样品-STM的W尖端间隙的光发射。这一结果表明，在太赫兹光谱范围内的原子空间分辨率的光谱调查确实是可能的，因为在STM中的隧道电子束，激发STM光发射，很好地集中到原子水平。

项目成果

Mechanism of Prism-Coupled Scanning Tunneling Microscope Light Emission

• DOI: 10.1143/jjap.50.095201
• 发表时间: 2011-09
• 期刊: Japanese Journal of Applied Physics
• 影响因子: 1.5
• 作者: Wataru Iida;J. U. Ahamed;S. Katano;Y. Uehara