Tuning spin polarization and spin transport of zigzag graphene nanoribbons by line defects

2015 ◽  
Vol 17 (1) ◽  
pp. 638-643 ◽  
Author(s):  
G. P. Tang ◽  
Z. H. Zhang ◽  
X. Q. Deng ◽  
Z. Q. Fan ◽  
H. L. Zhu
Keyword(s):  
Electronic Properties ◽  
Spin Polarization ◽  
Spin Transport ◽  
Graphene Nanoribbons ◽  
Line Defect ◽  
Line Defects ◽  
Zigzag Graphene Nanoribbons

The spin-dependent electronic properties of zigzag-edged graphene nanoribbons with a line defect are investigated systematically and compared to those of the pristine ZGNR.

Role of edge dehydrogenation in magnetization and spin transport of zigzag graphene nanoribbons with line defects

2015 ◽  
Vol 27 ◽  
pp. 212-220 ◽  
Author(s):  
Dongqing Zou ◽  
Bin Cui ◽  
Changfeng Fang ◽  
Wenkai Zhao ◽  
Xiangru Kong ◽  
...  
Keyword(s):  
Spin Transport ◽  
Graphene Nanoribbons ◽  
Line Defects ◽  
Zigzag Graphene Nanoribbons

First-principles study of electronic transport properties of graphene nanoribbons with pentagon-heptagon (5-7) line defects

2015 ◽  
Vol 1727 ◽  
Author(s):  
Yasutaka Nishida ◽  
Takashi Yoshida ◽  
Fumihiko Aiga ◽  
Yuichi Yamazaki ◽  
Hisao Miyazaki ◽  
...  
Keyword(s):  
Transport Properties ◽  
Electronic Transport ◽  
First Principles ◽  
Density Functional ◽  
Graphene Nanoribbons ◽  
Edge State ◽  
Line Defect ◽  
Electronic Transport Properties ◽  
Current Voltage ◽  
Line Defects

ABSTRACTIn this study, we investigated the influence of line defects consisting of pentagon-heptagon (5-7) pairs on the electronic transport properties of zigzag-edged and armchair-edged graphene nanoribbons (GNRs). Using the first-principles density functional theory, we study their electronic properties. To investigate their current-voltage (I-V) characteristics at low bias voltage (∼ 1 meV), we use the nonequilibrium Green’s function method. As a result, we found that the conductance of the GNRs having a connected line defect between source and drain shows better performance than that of the ideal zigzag-edged GNRs (ZGNRs). A detailed investigation of the transmission spectra and the wave function around the Fermi level reveals that the line defects arranged along the transport direction work similar to an edge state of the ZGNRs and can be an additional conduction channel. Our results suggest that such a line defect can be effective for low-resistance GNR interconnects.

Tuning electronic and magnetic properties of zigzag graphene nanoribbons with a Stone–Wales line defect by position and axis tensile strain

RSC Advances ◽  
2015 ◽  
Vol 5 (42) ◽  
pp. 33407-33413 ◽  
Author(s):  
W. X. Zhang ◽  
C. He ◽  
T. Li ◽  
S. B. Gong
Keyword(s):  
Density Functional Theory ◽  
Magnetic Properties ◽  
Density Functional ◽  
Tensile Strain ◽  
Graphene Nanoribbons ◽  
Line Defect ◽  
Functional Theory ◽  
Electronic And Magnetic Properties ◽  
Zigzag Graphene Nanoribbons

The structural, electronic and magnetic properties can be modulated by changing the SW LD locations and axis tensile strain of 10-ZGNRs using density functional theory.

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