Conductance Quantization of Gold Nanowires as a Ballistic conductor

被引：0

作者：

Takayanagi, Kunio ^{[1
]}

Oshima, Yoshifumi ^{[2
]}

Kurui, Yoshihiko ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Phys, Meguro Ku, 2-12-1 O Okayama, Tokyo 1528551, Japan

[2] Interdisciplinary Grad Sch Sci & Engn, Midori Ku, Yokohama, Kanagawa 2268503, Japan

来源：

PROCEEDINGS OF THE 2009 IEEE INTERNATIONAL INTERCONNECT TECHNOLOGY CONFERENCE | 2009年

基金：

日本科学技术振兴机构;

关键词：

POINT CONTACTS; METALLIC CONTACTS; FLUCTUATIONS; HISTOGRAMS;

D O I：

10.1109/IITC.2009.5090337

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Electron transport in gold nanowires is studied by transmission electron microscopy (TEM) simultaneously with conductance measurement by using a scanning tunneling tip as an electrode. Conductance evolution while thinning of a gold nanowire shows sequential steps until it breaks after forming a single atomic chain. The step heights coincide the quantum unit, G(0)=2e(2)/h = (12.9k Omega)(-1), except a little deviation due to multiple reflection. Gold nanowires fabricated in the < 110 > orientation can elongate to a several nanometer in length, and show linear current-voltage relation even for the bias voltage of 0.2V. Gold nanowires, thus, behave as a ballistic conductor, and their conductance is quantized to carry current, 1 mu A per single atomic chain at the bias voltage of 13mV.

引用

页码：47 / +

页数：2