scholarly journals Iron-phthalocyanine molecular junction with high spin filter efficiency and negative differential resistance

2012 ◽  
Vol 136 (6) ◽  
pp. 064707 ◽  
Author(s):  
Jing Huang ◽  
Ke Xu ◽  
Shulai Lei ◽  
Haibin Su ◽  
Shangfeng Yang ◽  
...  
Keyword(s):  
High Spin ◽  
Negative Differential Resistance ◽  
Differential Resistance ◽  
Molecular Junction ◽  
Iron Phthalocyanine ◽  
Spin Filter ◽  
Filter Efficiency

Thermal spin filtering, thermal spin switching and negative-differential-resistance in thermal spin currents in zigzag SiC nanoribbons

2014 ◽  
Vol 16 (33) ◽  
pp. 17493-17498 ◽  
Author(s):  
Dan-Dan Wu ◽  
Hua-Hua Fu ◽  
Lei Gu ◽  
Yun Ni ◽  
Feng-Xia Zu ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Negative Differential Resistance ◽  
Differential Resistance ◽  
Spin Filter ◽  
Spin Currents ◽  
Heterojunction Device ◽  
Spin Switching ◽  
Spin Filtering

A thermoelectric heterojunction device based on zigzag silicon carbide nanoribbons can serve as a perfect thermal spin filter and switcher.

Negative differential resistance in the unsymmetrical C121-based molecular junction

2011 ◽  
Vol 375 (27) ◽  
pp. 2639-2643 ◽  
Author(s):  
P. Zhao ◽  
D.S. Liu ◽  
Y. Zhang ◽  
Y. Su ◽  
S.J. Li ◽  
...  
Keyword(s):  
Negative Differential Resistance ◽  
Differential Resistance ◽  
Molecular Junction

THE INFLUENCE OF THE COUPLING STRENGTH ON THE ELECTRON TRANSPORT THROUGH THE BENZENE-1,4-DITHIOLATE MOLECULAR JUNCTION

2013 ◽  
Vol 27 (16) ◽  
pp. 1350121 ◽  
Author(s):  
YUNJIN YU ◽  
YAOYU LI ◽  
LANGHUI WAN ◽  
BIN WANG ◽  
YADONG WEI
Keyword(s):  
Electron Transport ◽  
Electronic Transport ◽  
Coupling Strength ◽  
First Principles ◽  
Negative Differential Resistance ◽  
Resonant State ◽  
Differential Resistance ◽  
Stable Configuration ◽  
Molecular Junction ◽  
Aluminum Metal

The electronic transport properties of one benzene-1,4-dithiolate molecule coupled by two aluminum metal leads were investigated by using first-principles method. The influence of the coupling distance between the molecule and the electrodes on I–V curve was studied thoroughly. Our calculations showed that when the system is in the most stable configuration, where the system total energy is the lowest, and the electron transport is in off-resonant state. Starting from the most stable configuration, when we gradually increase the distance between the molecule and electrodes and so decreasing the coupling strength of the molecule and electrodes, the conductance, as well as the I–V curve, does not decrease immediately but increase quickly at first. Only when we separate the molecule and electrodes far enough, the current begins to drop quickly. The total scattering charge density was presented in order to understand this phenomenon. A one-level quantum dot model is used to explain it. Finally, negative differential resistance was observed and analyzed.

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