Strain effect on transport properties of hexagonal boron–nitride nanoribbons

doi:10.1088/1674-1056/19/8/086105

中国物理B ›› 2010, Vol. 19 ›› Issue (8): 86105-086105.doi: 10.1088/1674-1056/19/8/086105

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇下一篇

Strain effect on transport properties of hexagonal boron–nitride nanoribbons

陈风, 陈元平, 张迷, 钟建新

Laboratory for Quantum Engineering and Micro-Nano Energy Technology and Department of Physics, Xiangtan University, Xiangtan 411105, China

收稿日期:2009-12-17 修回日期:2010-01-21 出版日期:2010-08-15 发布日期:2010-08-15
基金资助:
Project supported by the Cultivation Fund of the Key Scientific and Technical Innovation Project, Ministry of Education of China (Grant No. 708068), the Specialized Research Fund for the Doctoral Program of Higher Education, Ministry of Education of China (Grant No. 200805301001), and the Open Fund based on Innovation Platform of Hunan Colleges and Universities, China (Grant No. 09K034).

Strain effect on transport properties of hexagonal boron–nitride nanoribbons

Chen Feng(陈风), ChenYuan-Ping(陈元平)^†,Zhang Mi(张迷), and Zhong Jian-Xin(钟建新)^‡

Laboratory for Quantum Engineering and Micro-Nano Energy Technology and Department of Physics, Xiangtan University, Xiangtan 411105, China

Received:2009-12-17 Revised:2010-01-21 Online:2010-08-15 Published:2010-08-15
Supported by:
Project supported by the Cultivation Fund of the Key Scientific and Technical Innovation Project, Ministry of Education of China (Grant No. 708068), the Specialized Research Fund for the Doctoral Program of Higher Education, Ministry of Education of China (Grant No. 200805301001), and the Open Fund based on Innovation Platform of Hunan Colleges and Universities, China (Grant No. 09K034).

摘要/Abstract

摘要： The transport properties of hexagonal boron--nitride nanoribbons under the uniaxial strain are investigated by the Green's function method. We find that the transport properties of armchair boron--nitride nanoribbon strongly depend on the strain. In particular, the features of the conductance steps such as position and width are significantly changed by strain. As a strong tensile strain is exerted on the nanoribbon, the highest conductance step disappears and subsequently a dip emerges instead. The energy band structure and the local current density of armchair boron--nitride nanoribbon under strain are calculated and analysed in detail to explain these characteristics. In addition, the effect of strain on the conductance of zigzag boron--nitride nanoribbon is weaker than that of armchair boron nitride nanoribbon.

Abstract: The transport properties of hexagonal boron–nitride nanoribbons under the uniaxial strain are investigated by the Green's function method. We find that the transport properties of armchair boron–nitride nanoribbon strongly depend on the strain. In particular, the features of the conductance steps such as position and width are significantly changed by strain. As a strong tensile strain is exerted on the nanoribbon, the highest conductance step disappears and subsequently a dip emerges instead. The energy band structure and the local current density of armchair boron–nitride nanoribbon under strain are calculated and analysed in detail to explain these characteristics. In addition, the effect of strain on the conductance of zigzag boron–nitride nanoribbon is weaker than that of armchair boron nitride nanoribbon.

Key words: transport properties, hexagonal boron–nitride nanoribbons, Green's function

中图分类号: (Mechanical properties of nanoscale systems)

62.25.-g

62.20.F- (Deformation and plasticity) 71.20.Nr (Semiconductor compounds) 73.63.-b (Electronic transport in nanoscale materials and structures) 81.40.Lm (Deformation, plasticity, and creep)

陈风, 陈元平, 张迷, 钟建新. Strain effect on transport properties of hexagonal boron–nitride nanoribbons[J]. 中国物理B, 2010, 19(8): 86105-086105.

Chen Feng(陈风), ChenYuan-Ping(陈元平),Zhang Mi(张迷), and Zhong Jian-Xin(钟建新). Strain effect on transport properties of hexagonal boron–nitride nanoribbons[J]. Chin. Phys. B, 2010, 19(8): 86105-086105.

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Strain effect on transport properties of hexagonal boron–nitride nanoribbons

Strain effect on transport properties of hexagonal boron–nitride nanoribbons

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