Magnetism and exchange-bias effect at the MnN/Fe interface

被引：7

作者：

Simon, E. ^{[1
]}

Yanes, R. ^{[2
]}

Khmelevskyi, S. ^{[3
]}

Palotas, K. ^{[1
,4
,5
]}

Szunyogh, L. ^{[1
,6
]}

Nowak, U. ^{[7
]}

机构：

[1] Budapest Univ Technol & Econ, Dept Theoret Phys, Budafoki Ut 8, H-1111 Budapest, Hungary

[2] Univ Salamanca, Dept Appl Phys, E-37008 Salamanca, Spain

[3] Vienna Univ Technol, Inst Appl Phys, Ctr Computat Mat Sci, Wiedner Hauptstr 8, A-1060 Vienna, Austria

[4] Slovak Acad Sci, Inst Phys, Dept Complex Phys Syst, SK-84511 Bratislava, Slovakia

[5] Univ Szeged, MTA SZTE React Kinet & Surface Chem Res Grp, H-6720 Szeged, Hungary

[6] Budapest Univ Technol & Econ, MTA BME Condensed Matter Res Grp, Budafoki Ut 8, H-1111 Budapest, Hungary

[7] Univ Konstanz, Dept Phys, D-78464 Constance, Germany

来源：

PHYSICAL REVIEW B | 2018年 / 98卷 / 09期

关键词：

TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET; BLOCKING TEMPERATURE; ANTIFERROMAGNETS; ANISOTROPY; METALS; MODEL; SPINS;

D O I：

10.1103/PhysRevB.98.094415

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Based on ab initio calculations and spin dynamics simulations, we perform a detailed study on the magnetic properties of bulk MnN and the MnN/Fe interface. We determine the spin model parameters for the theta-phase of bulk MnN, and we find that the competition between the nearest and the next-nearest-neighbor interactions leads to antiferromagnetic ordering of the Mn spins, in agreement with previous theoretical and experimental results. At the MnN/Fe interface, a sizable Dzyaloshinskii-Moriya interaction appears leading to a stable exchange-bias effect. We study the dependences of the exchange-bias effect on the thicknesses of the ferromagnetic and the antiferromagnetic layers, and we compare them to experimentally obtained results [Meinert et al., Phys. Rev. B 92,144408 (2015)].

引用

页数：8

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