Electronic and magnetic properties of the Co2MnAl/Au interface: Relevance of the Heusler alloy termination

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:385

Article

Makinistian, L.^1,2  Albanesi, E. A.^1,2 

[1] Inst Fis Literal CONICET UNL, RA-3000 Santa Fe, Argentina

[2] Univ Nacl Entre Rios, Fac Ingn, RA-3101 Oro Verde, Argentina

关键词: Heusler alloys;    N/F interfaces;    Spintronics;   

DOI  :  10.1016/j.jmmm.2015.02.072

来源: Elsevier

【 摘 要 】

We present ab initio calculations of electronic and magnetic properties of the ferromagnetic metal/normal metal (FIN) interface of the Hensler alloy CO2MnAl and gold. Two structural models are implemented: one with the ferromagnet slab terminated in a pure cobalt plane (Co-2-t), and the other with it terminated with a plane of MnAl (MnAl-t). The relaxed optimum distance between the slabs is determined for the two models before densities of states, magnetic moments, and the electric potential are resolved and analyzed layer by layer through the interface. Complementary, calculations for the free surfaces of gold and the Heusler alloy (for both models, Co-2-t and MnAl-t) are performed for a better interpretation of the physics of the interlace. We predict important differences between the two models, suggesting that both terminations are to be expected to display sensibly different spin injection performances. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

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