トンネル分光によるギ酸イオンの表面配向
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概要
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Inelastic electron tunneling spectroscopy (JETS) has been applied to investigate the orientational behaviour of formate ions adsorbed on the alumina surface of Al/Al<SUB>2</SUB>O<SUB>3</SUB>/Pb tunnel junction. The formate ions were introduced by external doping technique. The directions of the molecules relative to alumina surface are determined by the relative intensities of spectral lines taking advantage of the selection rule that JETS excites predominantly the vibrational mode parallel to the tunneling direction.<BR>As the coverage increased, the formate ions rotated by about 20 degrees and declined by about 10 degrees. It is also observed that the bias voltage has sensitive effect upon these surface conformation.
- 社団法人 日本分光学会の論文
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