Title of article
Observation of the screened potential and the Friedel oscillation by low-temperature scanning tunneling microscopy/spectroscopy
Author/Authors
Masanori Ono، نويسنده , , Takahiro Nishio، نويسنده , , Toshu An، نويسنده , , Toyoaki Eguchi، نويسنده , , Yukio Hasegawa، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2009
Pages
6
From page
469
To page
474
Abstract
Using low-temperature scanning tunneling microscopy/spectroscopy we have developed a method for measuring electrostatic potential in high spatial and energy resolutions, and performed a real-space observation of the potential screened by two-dimensional surface electrons around step edges, where extra charges are localized, on the Si(1 1 1)√3 × √3-Ag surface. In the potential images, characteristic decay and the Friedel oscillation were clearly observed around the charges.
Keywords
Scanning tunneling microscopy , Scanning tunneling spectroscopy , Screening , The Friedel oscillation , Electron standing waves , Two-dimensional electron system
Journal title
Applied Surface Science
Serial Year
2009
Journal title
Applied Surface Science
Record number
1012467
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