Electronic transport properties of an (8,0) carbon/boron nitride nanotube heterojunction

被引：8
作者：
Liu Hong-Xia [1 ]
Zhang He-Ming [1 ]
Song Jiu-Xu [1 ]
Zhang Zhi-Yong [2 ]
机构：
[1] Xidian Univ, Key Lab, Minist Educ Wide Band Gap Semicond Mat & Devices, Sch Microelect, Xian 710071, Peoples R China
[2] NW Univ Xian, Informat Sci & Technol Inst, Xian 710069, Peoples R China
来源：
CHINESE PHYSICS B | 2010年 / 19卷 / 03期
关键词：
nanotube heterojunction; nonequilibrium Green's function; transport properties;
D O I：
10.1088/1674-1056/19/3/037104
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The structure of a heterojunction made up of an (8, 0) carbon nanotube and an (8, 0) boron nitride nanotube is achieved through geometry optimization implemented in the CASTEP package. Based on the optimized geometry, the model of the heterojunction is established. Its transport properties are investigated by combining the nonequilibrium Green's function with density functional theory. Results show that both the lowest unoccupied molecular orbital and the highest occupied molecular orbital mainly locate on the carbon nanotube section. In the current-voltage characteristic of the heterojunction, a recti. cation feature is revealed.
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页数：5
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