A QUANTUM MODEL FOR THE GIANT MAGNETORESISTANCE EFFECT

1996 ◽  
Vol 10 (17) ◽  
pp. 2103-2110
Author(s):  
LEI ZHOU ◽  
RUIBAO TAO
Keyword(s):  
Simple Model ◽  
Electric Conductivity ◽  
Giant Magnetoresistance ◽  
Quantum Model ◽  
Magnetoresistance Effect ◽  
Conduction Electrons ◽  
Giant Magnetoresistance Effect ◽  
Model Hamiltonian ◽  
Spin Dependent Scattering ◽  
Scattering Potential

A quantum explanation based on the previous semi-classical theory has been presented for the giant magnetoresistance (GMR) effect in this letter. A simple model Hamiltonian has been proposed for the conduction electrons in the magnetic layered structures in which the interaction of the conduction electrons with the local spins and the spin-dependent scattering potential have been considered, then an analytical expression of the effective electric conductivity is derived after some simplifying procedures. The main feature of the GMR effect may be explained by this simple model qualitatively.

Giant Magnetoresistance in Annealed Fe/Cr Multilayers

1993 ◽  
Vol 313 ◽  
Author(s):  
Noa More Rensing ◽  
Bruce M. Clemens
Keyword(s):  
Giant Magnetoresistance ◽  
Structural Effect ◽  
Magnetic Effect ◽  
Antiferromagnetic Coupling ◽  
X Ray Diffraction ◽  
Magnetoresistance Effect ◽  
X Ray ◽  
Giant Magnetoresistance Effect ◽  
Higher Temperature ◽  
Spin Dependent Scattering

ABSTRACTThe giant magnetoresistance effect in antiferromagnetically coupled Fe/Cr Multilayers has been attributed to spin dependent scattering at the interfaces between the constituents. One possible source of this spin dependent scattering is chromium impurities in the iron layers due to intermixing at the interfaces. Annealing the films can promote the diffusion of the components, increasing the impurity concentration and therefore the Magnetoresistance. For this study Fe/Cr Multilayers were annealed at several temperatures and for several durations. Annealing at moderate temperatures (∼ 350°C) increases the Magnetoresistance, while higher temperature anneals (∼ 600°C) cause the magnetoresistance to disappear completely. Long anneals at 330°C (> 100 hours) also reduce the Magnetoresistance. VSM Measurements indicate that the antiferromagnetic coupling is reduced in the annealed samples but show no evidence of Magnetically “dead” alloy layers. Low angle X-ray diffraction indicates that the structural effect of annealing is very subtle in comparison to the significant magnetic effect.

Interpretation of the giant magnetoresistance effect in Co/Cu(100) multilayers with the quantum model of giant magnetoresistance

1994 ◽  
Vol 50 (14) ◽  
pp. 9982-9988 ◽  
Author(s):  
S. K. J. Lenczowski ◽  
M. A. M. Gijs ◽  
J. B. Giesbers ◽  
R. J. M. van de Veerdonk ◽  
W. J. M. de Jonge
Keyword(s):  
Giant Magnetoresistance ◽  
Quantum Model ◽  
Magnetoresistance Effect ◽  
Giant Magnetoresistance Effect

Microwave Giant Magnetoresistance Effect in Metallic Nanostructures

2018 ◽  
Vol 119 (13) ◽  
pp. 1297-1300
Author(s):  
A. B. Rinkevich ◽  
M. A. Milyaev ◽  
L. N. Romashev ◽  
D. V. Perov
Keyword(s):  
Giant Magnetoresistance ◽  
Metallic Nanostructures ◽  
Magnetoresistance Effect ◽  
Giant Magnetoresistance Effect

Giant magnetoresistance effect and spin filters in phthalocyanine-based molecular devices

2013 ◽  
Vol 14 (11) ◽  
pp. 2940-2947 ◽  
Author(s):  
Yan-Hong Zhou ◽  
Jing Zeng ◽  
Li-Ming Tang ◽  
Ke-Qiu Chen ◽  
W.P. Hu
Keyword(s):  
Giant Magnetoresistance ◽  
Molecular Devices ◽  
Magnetoresistance Effect ◽  
Giant Magnetoresistance Effect ◽  
Spin Filters

Angular dependence of the giant magnetoresistance effect

1995 ◽  
Vol 51 (1) ◽  
pp. 292-296 ◽  
Author(s):  
L. B. Steren ◽  
A. Barthélémy ◽  
J. L. Duvail ◽  
A. Fert ◽  
R. Morel ◽  
...  
Keyword(s):  
Angular Dependence ◽  
Giant Magnetoresistance ◽  
Magnetoresistance Effect ◽  
Giant Magnetoresistance Effect
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