Mapping the surface electrostatic potentials of Au(111) by using barrier-height measurements

被引：12

作者：

Aoki, Takuro ^{[1
]}

Yokoyama, Takashi ^{[1
]}

机构：

[1] Yokohama City Univ, Dept Nanosci & Technol, Kanazawa Ku, Yokohama, Kanagawa 2360027, Japan

来源：

PHYSICAL REVIEW B | 2014年 / 89卷 / 15期

关键词：

SCANNING-TUNNELING-MICROSCOPY; THIN INSULATING FILM; LOCAL WORK FUNCTION; ELECTRONIC-STRUCTURE; METAL-SURFACES; RECONSTRUCTION; SPECTROSCOPY; DISLOCATIONS; DOMAINS; STEPS;

D O I：

10.1103/PhysRevB.89.155423

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The surface electrostatic potential of Au(111) has been evaluated by using site-specific barrier-height measurements in a scanning tunneling microscope. From the spatial variation of the barrier height, sharp enlargement and reduction of the surface potential are obtained at the upper and lower step edges, respectively, which are characterized as the Smoluchowski effect. We also observe the potential with oscillatory decay away from the step, known as the Friedel potential oscillation. In addition, the periodic potential modulation induced by the surface reconstruction is evaluated quantitatively, which is confirmed by the energy shift of the bulk electronic states.

引用

页数：5

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