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Magnetic and transport properties of Mn3−xGa/MgO/Mn3−xGa magnetic tunnel junctions: A first-principles study
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10.1063/1.3676195
/content/aip/journal/apl/100/2/10.1063/1.3676195
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/2/10.1063/1.3676195
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) A schematic device model of Mn3Ga/MgO/Mn3Ga magnetic tunnel junction.

Image of FIG. 2.
FIG. 2.

(Color online) Spin-dependent transmission coefficient as a function of in-plane wave vector k//  = (kx,ky) of Mn2Ga/MgO/Mn2Ga and Mn3Ga/MgO/Mn3Ga MTJs. For the Mn2Ga/MgO/Mn2Ga MTJ, (a) and (b) show the transmission of spin-up and spin-down electrons, respectively, under parallel magnetic configuration of two electrodes. (c) and (d) show the transmission of spin-up and spin-down electrons, respectively, under antiparallel magnetic configuration of two electrodes. For the Mn3Ga/MgO/Mn3Ga MTJ, (e) and (f) show the transmission of spin-up and spin-down electrons, respectively, under parallel magnetic configuration of two electrodes.

Image of FIG. 3.
FIG. 3.

(Color online) The spin-resolved LDOSs of the interfacial (marked as dash-dotted lines, green) and bulk (marked as solid lines, red) Mn atoms within (a) Mn2Ga/MgO/Mn2Ga (001) and (b) Mn3Ga/MgO/Mn3Ga (001) MTJs.

Image of FIG. 4.
FIG. 4.

(Color online) The majority- and minority-spin band structures of bulk (a)-(b) Mn2Ga and (c)-(d) Mn3Ga along (001) direction at k//  = (0,0). (e) shows the complex band structure of MgO, where κz and kz denote the magnitude of imaginary and real parts of the wave-vector of propagating Bloch states, respectively. The decay rates of a specified symmetry can be evaluated by the value of κ at which its corresponding band intersects the Fermi level.

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/content/aip/journal/apl/100/2/10.1063/1.3676195
2012-01-11
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Magnetic and transport properties of Mn3−xGa/MgO/Mn3−xGa magnetic tunnel junctions: A first-principles study
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/2/10.1063/1.3676195
10.1063/1.3676195
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