Nanomechanically induced molecular conductance switch

被引：14

作者：

Li, Xiao-Fei ^{[1
,2
]}

Wang, Lingling ^{[1
]}

Chen, Ke-Qiu ^{[1
]}

Luo, Yi ^{[2
,3
]}

机构：

[1] Hunan Univ, Sch Phys & Microelect, Changsha 410082, Hunan, Peoples R China

[2] Royal Inst Technol, Sch Biotechnol, Dept Theoret Chem, S-10691 Stockholm, Sweden

[3] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 23期

基金：

瑞典研究理事会;

关键词：

CARBON NANOTUBES; DYNAMICS;

D O I：

10.1063/1.3273867

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A mechanical single molecular switch using specific metallic broken carbon nanotubes (BCNTs) as electrodes is designed. It can operate by simply pressing one of the electrodes mechanically with robust performance. The device has been modeled by combining molecular dynamics simulations and first principles calculations. With the help of molecular dynamic simulations, a realistic description of the broken ends of the BCNT is obtained, while high ON/OFF conductance ratio has been obtained from nonequilibrium Green's function calculations. A microscopic mechanism is suggested for the switch behavior. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3273867]

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