Please use this identifier to cite or link to this item:
Title: Magnetocrystalline anisotropy and its electric-field-assisted switching of Heusler-compound-based perpendicular magnetic tunnel junctions
Authors: Bai Z. 
Shen L. 
Cai Y. 
Wu Q.
Zeng M. 
Han G. 
Feng Y.P. 
Keywords: Anisotropy
Density functional theory
Electric fields
Magnetic anisotropy
Magnetic logic devices
Magnetocrystalline anisotropy
Magnetoelectric effects
Tunnel junctions
Heusler alloys
Magnetic crystalline anisotropy
Magnetic tunnel junction
Magnetoelectric couplings
Magnetoelectric properties
Non-equilibrium greens functions
Spin transport
Thermodynamic equilibria
Magnetic devices
Issue Date: 2014
Publisher: Institute of Physics Publishing
Citation: Bai Z., Shen L., Cai Y., Wu Q., Zeng M., Han G., Feng Y.P. (2014). Magnetocrystalline anisotropy and its electric-field-assisted switching of Heusler-compound-based perpendicular magnetic tunnel junctions. New Journal of Physics 16 : 103033. ScholarBank@NUS Repository.
Abstract: Employing density functional theory combined with the non-equilibrium Greens function formalism, we systematically investigate the structural, magnetic and magnetoelectric properties of the Co2FeAl(CFA)/MgO interface, as well as the spin-dependent transport characteristics of the CFA/MgO/CFA perpendicular magnetic tunnel junctions (p-MTJs). We find that the structure of the CFA/MgO interface with the oxygen-top FeAl termination has high thermal stability, which is protected by the thermodynamic equilibrium limit. Furthermore, this structure is found to have perpendicular magnetocrystalline anisotropy (MCA). Giant electric-field-assisted modifications of this interfacial MCA through magnetoelectric coupling are demonstrated with an MCA coefficient of up to 10-7 erg V-1 cm. In addition, our non-collinear spin transport calculations of the CFA/MgO/CFA p-MTJ predict a good magnetoresistance performance of the device. © 2014 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
Source Title: New Journal of Physics
ISSN: 1367-2630
DOI: 10.1088/1367-2630/16/10/103033
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
10_1088_1367-2630_16_10_103033.pdf1.58 MBAdobe PDF




checked on Oct 19, 2020

Page view(s)

checked on Oct 15, 2020

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.