Prospect for tunneling anisotropic magneto-resistance in ferrimagnets: spin-orbit coupling effects in Mn.sub.3./sub.Ge and Mn.sub.3./sub.Ga

0471314 - FZÚ 2017 RIV US eng J - Journal Article
Khmelevskyi, S. - Shick, Alexander - Mohn, P.
Prospect for tunneling anisotropic magneto-resistance in ferrimagnets: spin-orbit coupling effects in Mn₃Ge and Mn₃Ga.
Applied Physics Letters. Roč. 109, č. 22 (2016), s. 1-4, č. článku 222402. ISSN 0003-6951. E-ISSN 1077-3118
R&D Projects: GA ČR GB14-37427G
Institutional support: RVO:68378271
Keywords : magneto-resistance * ferrimagnets
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 3.411, year: 2016

Magnetic anisotropic phenomena in Mn3Ge and Mn3Ga ferrimagnets are studied by first-principles density functional theory calculations. We find a large positive magnetic anisotropy energy, associated with the Mn-atoms in the 4d-crystallographic positions. Sizable anisotropy in the density of states is found in the vicinity of the Fermi energy, and suggests the promising possibility for the generation of a sizable tunneling anisotropic magneto-resistance effect (TAMR). The use of the ferrimagnetic materials for TAMR magnetic tunneling junctions is discussed as a prospective alternative for ferromagnetic and antiferromagnetic materials.
Permanent Link: http://hdl.handle.net/11104/0268699