Optimum Gaseous Pressure for Measurement of the X-Ray Excited Scanning Tunneling Microscope Tip Current
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概要
- 論文の詳細を見る
When X-rays irradiate a sample surface of a scanning tunneling microscope (STM), a current between the STM tip and the sample is detected. This current originates from the electron emission from the sample surface, and can be used for surface analysis. The STM tip current was amplified using gaseous molecules; however, the direct ionization of molecules in the air affected the tip current measurement at normal air pressure. It was found that the optimum gaseous pressure was near 5 kPa, where the influence of the direct ionization could be ignored, although the amplification effect still occurred.
- 社団法人応用物理学会の論文
- 1997-03-15
著者
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WAGATSUMA Kazuaki
Institute for Materials Research, Tohoku University
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Wagatsuma K
Tohoku Univ. Sendai Jpn
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Tsuji Kouichi
Institute For Materials Research Tohoku University
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Wagatsuma Kazuaki
Institute For Materials Research Tohoku University
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