scholarly journals Efficient spin-filtering, magnetoresistance and negative differential resistance effects of a one-dimensional single-molecule magnet Mn(dmit)2-based device with graphene nanoribbon electrodes

AIP Advances ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 125117 ◽  
Author(s):  
N. Liu ◽  
J. B. Liu ◽  
K. L. Yao
Keyword(s):  
Single Molecule ◽  
Negative Differential Resistance ◽  
Differential Resistance ◽  
Graphene Nanoribbon ◽  
Single Molecule Magnet ◽  
One Dimensional ◽  
Spin Filtering

SPIN-FILTERING, RECTIFYING AND NEGATIVE DIFFERENTIAL RESISTANCE BEHAVIORS IN Co(dmit)2 MOLECULAR DEVICES WITH MONATOMIC (C, Fe, Au) ELECTRODES

SPIN ◽  
2014 ◽  
Vol 04 (02) ◽  
pp. 1440016
Author(s):  
SHENLANG YAN ◽  
MENGQIU LONG ◽  
XIAOJIAO ZHANG ◽  
JUN HE ◽  
HUI XU ◽  
...  
Keyword(s):  
Single Molecule ◽  
Negative Differential Resistance ◽  
Density Functional ◽  
Electrode Materials ◽  
Energy Levels ◽  
Differential Resistance ◽  
Interesting Phenomenon ◽  
Filtering Effect ◽  
Dependent Transport ◽  
Spin Filtering

Using nonequilibrium Green's functions (NEGFs) combined with the density functional theory (DFT), we study the electronic transport properties of a single molecule magnet Co ( dmit )2, which is sandwiched between two monatomic chain electrodes, and the different electrode materials carbon, iron and gold, have been considered. The results show that the electrodes play a crucial role in the spin-dependent transport of the Co ( dmit )2 molecular device, and some interesting phenomenon, such as perfect spin-filtering effect, rectifying and negative differential resistance (NDR) can be observed. We demonstrated that the magnetic Fe electrode can lead to high spin-flittering effect, and the different hybridization and alignment of energy levels between the molecule and the electrodes may be responsible for the rectification performance, and the distributions (delocalization or localization) of the frontier molecular orbitals under different bias result in the NDR behaviors. These characteristics could be used in the study of spin physics and the realization of nanospintronic devices.

A first-principles study of the spin transport properties of a 4H-TAHDI-based multifunctional spintronic device with graphene nanoribbon electrodes

2014 ◽  
Vol 2 (32) ◽  
pp. 6648-6654 ◽  
Author(s):  
P. Zhao ◽  
Q. H. Wu ◽  
H. Y. Liu ◽  
D. S. Liu ◽  
G. Chen
Keyword(s):  
Transport Properties ◽  
First Principles ◽  
Negative Differential Resistance ◽  
Giant Magnetoresistance ◽  
Spin Transport ◽  
Differential Resistance ◽  
Graphene Nanoribbon ◽  
Spintronic Device ◽  
First Principles Study ◽  
Spin Filtering

The 4H-TAHDI-based spintronic device can exhibit perfect giant magnetoresistance, spin-filtering, bipolar spin-rectifying, and negative differential resistance effects simultaneously.

Spin-filtering transport and switching effect of MnCu single-molecule magnet

2010 ◽  
Vol 96 (19) ◽  
pp. 192112 ◽  
Author(s):  
H. Hao ◽  
X. H. Zheng ◽  
Z. X. Dai ◽  
Z. Zeng
Keyword(s):  
Single Molecule ◽  
Switching Effect ◽  
Single Molecule Magnet ◽  
Spin Filtering

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.

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