Conduction switching behaviors of a small molecular device

被引：23

作者：

Qiu, M. ^{[1
]}

Zhang, Z. H. ^{[1
]}

Deng, X. Q. ^{[1
]}

Chen, K. Q. ^{[2
,3
]}

机构：

[1] Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Changsha 410004, Hunan, Peoples R China

[2] Hunan Univ, Dept Appl Phys, Changsha 410082, Hunan, Peoples R China

[3] Hunan Univ, Key Lab Micronano Optoelect Devices, Minist Educ, Changsha 410082, Hunan, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2010年 / 107卷 / 06期

基金：

中国国家自然科学基金;

关键词：

density functional theory; molecular electronics; organic compounds; switches; CONFORMATIONAL-CHANGES; RECTIFICATION;

D O I：

10.1063/1.3331928

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We calculate the current-voltage properties for a small organic molecule system based on the local atomic orbital density-functional theory. It has been found that our system has a distinctive conduction switching behavior with the "on/off" ratio on the order of 10(2) at a bias of 0.8 V and then up to more than the order of 10(3) in a bias range from 0.8 to 1.8 V, and its explicit steady state and metastable state can be converted to each other by thermal activation. These findings suggest that this small molecular system has obvious potential advantages for the realization of the miniaturized molecular switch.

引用

页数：5

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