Demountable Single-Atom Electron Source

• Oshima Chuhei

  Department of Applied Physics, Waseda University, Japan Kagami Memorial Laboratory for Material Science and Technology, Waseda University, Japan

• Rokuta Eiji

  Department of Applied Physics, Waseda University, Japan Kagami Memorial Laboratory for Material Science and Technology, Waseda University, Japan

• Itagaki Takahiro

• Ishikawa Tsuyosi

  Department of Applied Physics, Waseda University, Japan Kagami Memorial Laboratory for Material Science and Technology, Waseda University, Japan

• Cho Bokurai

  Department of Applied Physics, Waseda University, Japan Kagami Memorial Laboratory for Material Science and Technology, Waseda University, Japan

• Kuo Hong-Shi

  Institute of Physics, Academia Scinica

• Hwang Ing-Shouh

  Institute of Physics, Academia Scinica

• Tsong Tien T.

  Institute of Physics, Academia Scinica

Abstract

We report emission properties of single-atom tips, noble electron sources terminated with a single atom. The repairing function of the sources, which had been already demonstrated by using field ion microscope [Fu, et al. Phys. Rev. B 64, 113401 (2001)], was confirmed by using field emission microscopy, and in addition, the demountable character was demonstrated repeatedly. The brightness of the collimated beam emitted from the single-atom tips was estimated to be an order of 10¹⁰ A/cm²/str. (E ∼ 2 keV), which is two orders of magnitude higher than those of the conventional field emission sources. There appeared an extra shoulder in the energy spectra, which is strongly correlated with a single-atom ended structure. The fluctuation of the emission current exhibited step- and spike-like noises, which were typical features of nano-electron sources. The single-atom sources are promising candidates of the electron sources in high-performance electron-beam instruments. [DOI: 10.1380/ejssnt.2005.412]

Journal

• e-Journal of Surface Science and Nanotechnology

  e-Journal of Surface Science and Nanotechnology 3 412-416, 2005

  The Japan Society of Vacuum and Surface Science

Keywords

• Demountable source
• Single-atom source
• High brightness
• Coherent beam

Details

• CRID: 1390001205185539584
• NII Article ID: 130004438968
• DOI: 10.1380/ejssnt.2005.412
• ISSN: 13480391
• Web Site: http://www.jstage.jst.go.jp/article/ejssnt/3/0/3_0_412/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed