Unusually strong space-charge-limited current in thin wires

被引：149

作者：

Talin, A. Alec ^{[1
]}

Leonard, Francois ^{[1
]}

Swartzentruber, B. S. ^{[2
]}

Wang, Xin ^{[3
,4
]}

Hersee, Stephen D. ^{[3
,4
]}

机构：

[1] Sandia Natl Labs, Livermore, CA 94551 USA

[2] Sandia Natl Labs, Albuquerque, NM 87185 USA

[3] Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA

[4] Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87106 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.101.076802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The current-voltage characteristics of thin wires are often observed to be nonlinear, and this behavior has been ascribed to Schottky barriers at the contacts. We present electronic transport measurements on GaN nanorods and demonstrate that the nonlinear behavior originates instead from space-charge-limited current. A theory of space-charge-limited current in thin wires corroborates the experiments and shows that poor screening in high-aspect ratio materials leads to a dramatic enhancement of space-charge limited current, resulting in new scaling in terms of the aspect ratio.

引用

页数：4

共 22 条

[1] Electron screening in nanostructures [J].