Reproducible fabrication of metallic silver nanostructures on a Si(111)-(7x7) surface by tip-material transfer of a scanning tunneling microscope

被引：14

作者：

Fujita, D ^{[1
]}

Kumakura, T ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Nanomat Lab, Tsukuba, Ibaraki 3050047, Japan

来源：

APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 14期

关键词：

D O I：

10.1063/1.1565509

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A technique for reproducible fabrication of nanometer-scale silver dots, wires, characters, and figures on a Si(111) surface in ultrahigh vacuum using scanning tunneling microscopy and their electronic properties are presented. This method allows patterns to be formed at will by the computer-controlled application of voltage pulses between a silver-coated tip and the surface. Scanning tunneling spectroscopy shows unambiguous metallic behavior on the nanodots and depletion layer formation in the neighboring region. The dominant mechanism of nanodot formation can be attributed to the spontaneous formation of a point contact due to field-enhanced diffusion of silver atoms to the tip apex. (C) 2003 American Institute of Physics.

引用

页码：2329 / 2331

页数：3

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