A theoretical study of a spin polarized transport and giant magnetoresistance: The effect of the number of layers in a magnetic multilayer

2008 ◽  
Vol 103 (8) ◽  
pp. 083903
Author(s):  
Eun Sun Noh ◽  
Hyuck Mo Lee ◽  
Seung-Cheol Lee ◽  
Sergio E. Ulloa
2012 ◽  
Vol 539-540 ◽  
pp. 102-106 ◽  
Author(s):  
Jing Huang ◽  
Weiyi Wang ◽  
Shangfeng Yang ◽  
Haibin Su ◽  
Qunxiang Li ◽  
...  

2016 ◽  
Vol 18 (32) ◽  
pp. 22606-22616 ◽  
Author(s):  
A. García-Fuente ◽  
L. J. Gallego ◽  
A. Vega

We present a systematic theoretical study of the electronic transport in hydrogen passivated zigzag graphene and silicene nanoribbons with between zero and four neighboring H atoms on one edge replaced by magnetic transition metals (Fe, Co, and Ni).


2007 ◽  
Vol 124-126 ◽  
pp. 843-846
Author(s):  
Eun Sun Noh ◽  
Sergio E. Ulloa ◽  
Hyuck Mo Lee

We analyze the effect of the geometrical shape and size of the cross section on the spin-polarized transport and the giant magnetoresistance (GMR) by a finite element method, and evaluate the stability and the physical properties of nano-scale spin valves. We calculate the transmission coefficients in the ballistic regime by using a transfer-matrix method, and evaluate the GMR of the current perpendicular to the plane (CPP) by using a circuit theory. The conduction-band structure is simplified to the potential step, which is determined by combining the interfacial parameters calculated by first-principles with the free electron model. The geometrical shapes of the cross section are line and square. As a result, the cross sectional shape has a significant effect on the spin-polarized transport and the GMR. The square-shaped cross section has an advantage of the large GMR, which is contrary to the line-shaped cross section. These phenomena result from the difference of the cut-off energies with the transverse modes and, consequently, the different spin-down transmission coefficients.


2007 ◽  
Vol 105 (1) ◽  
pp. 185-189 ◽  
Author(s):  
R. N. Gurzhi ◽  
A. N. Kalinenko ◽  
A. I. Kopeliovich ◽  
P. V. Pyshkin ◽  
A. V. Yanovsky

2014 ◽  
Vol 378 (43) ◽  
pp. 3189-3195 ◽  
Author(s):  
Shuai Li ◽  
Mao-Wang Lu ◽  
Ya-Qing Jiang ◽  
Sai-Yan Chen

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