Electric field induced modulation to the magnetic anisotropy of Fe/silicene heterostructures: First-principles study

被引：7

作者：

Zheng, Huiling ^{[1
]}

Zhang, Rongyu ^{[1
]}

Han, Hecheng ^{[1
]}

Liu, Chunmei ^{[1
]}

Yan, Yu ^{[2
]}

机构：

[1] Bohai Univ, Coll New Energy, Jinzhou 121007, Peoples R China

[2] Jilin Univ, Dept Phys, Minist Educ, Key Lab Phys & Technol Adv Batteries, Changchun 130012, Jilin, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2019年 / 484卷

基金：

中国国家自然科学基金;

关键词：

Fe/silicene heterostructures; Perpendicular magnetic anisotropy; Electric field; First-principles; TOTAL-ENERGY CALCULATIONS; SILICENE; RISE;

D O I：

10.1016/j.jmmm.2019.03.107

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In view of the importance of inducing magnetism and large perpendicular magnetic anisotropy in silicene, the influence of an external electric field on the magnetism and the magnetic anisotropy of the Fe(15, 18, 21 monolayers)/silicene heterostructures are investigated by using first-principles calculations. The results show that the magnetic moments and the magnetic anisotropy of the Fe/silicene heterostructures are mainly from Fe films. With increasing the thickness of Fe film, the easy magnetization axis of the Fe/silicene heterostructure changes from out-of-plane to in-plane direction. In addition, the magnetic moments in all the Fe/silicene heterostructures are insensitive to the electric field. Particularly, under the positive electric field, the perpendicular magnetic anisotropy of the Fe(15 monolayers)/silicene can be enhanced, the magnetic anisotropy of the Fe (18 monolayers)/silicene increases from in-plane magnetic anisotropy to perpendicular magnetic anisotropy, and the magnetic anisotropy of the Fe(21 monolayers)/silicene also increases although its easy magnetization axis is still along in-plane direction. The mechanism of the electric-field-driven modulation of magnetic anisotropy is mainly from the increase of the positive contribution from spin-orbit coupling interaction between opposite spin d(z2) and d(yz) orbitals of the second Fe layer from the Fe/silicene interface. Our study reveals that the perpendicular magnetic anisotropy can be achieved or enhanced by applying positive electric field if the thickness of Fe film in Fe/silicene heterostructure is suitable.

引用

页码：172 / 178

页数：7

共 57 条

[1] Magnetocrystalline anisotropy and its electric-field-assisted switching of Heusler-compound-based perpendicular magnetic tunnel junctions [J].

Bai, Zhaoqiang ;

Shen, Lei ;

Cai, Yongqing ;

Wu, Qingyun ;

Zeng, Minggang ;

Han, Guchang ;

Feng, Yuan Ping .

NEW JOURNAL OF PHYSICS, 2014, 16

[2] Reversible Control of Co Magnetism by Voltage-Induced Oxidation [J].

Bi, Chong ;

Liu, Yaohua ;

Newhouse-Illige, T. ;

Xu, M. ;

Rosales, M. ;

Freeland, J. W. ;

Mryasov, Oleg ;

Zhang, Shufeng ;

te Velthuis, S. G. E. ;

Wang, W. G. .

PHYSICAL REVIEW LETTERS, 2014, 113 (26)

[3] PROJECTOR AUGMENTED-WAVE METHOD [J].

BLOCHL, PE .

PHYSICAL REVIEW B, 1994, 50 (24) :17953-17979

[4] Variation of microwave magnetic properties for thin films of ferromagnetic metals with the film thickness [J].

Bobrovskii, Stanislav Y. ;

Iakubov, Igor T. ;

Lagarkov, Andrei N. ;

Maklakov, Sergei A. ;

Maklakov, Sergei S. ;

Osipov, Aleksei V. ;

Rozanov, Konstantin N. ;

Ryzhikov, Ilya A. ;

Petrov, Dmitrii A. ;

Zezyulina, Polina A. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2018, 459 :20-25

[5] Controlling magnetism on metal surfaces with non-magnetic means: electric fields and surface charging [J].

Brovko, Oleg O. ;

Ruiz-Diaz, Pedro ;

Dasa, Tamene R. ;

Stepanyuk, Valeri S. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2014, 26 (09)

[6] Two- and One-Dimensional Honeycomb Structures of Silicon and Germanium [J].

Cahangirov, S. ;

Topsakal, M. ;

Akturk, E. ;

Sahin, H. ;

Ciraci, S. .

PHYSICAL REVIEW LETTERS, 2009, 102 (23)

[7]

Chen L, 2012, 2012 INTERNATIONAL CONFERENCE ON WAVELET ACTIVE MEDIA TECHNOLOGY AND INFORMATION PROCESSING (LCWAMTIP), P109, DOI 10.1109/ICWAMTIP.2012.6413451

[8] Enhanced Magnetic Anisotropies of Single Transition-Metal Adatoms on a Defective MoS2 Monolayer [J].

Cong, W. T. ;

Tang, Z. ;

Zhao, X. G. ;

Chu, J. H. .

SCIENTIFIC REPORTS, 2015, 5

[9] Surface magnetoelectric effect in ferromagnetic metal films [J].

Duan, Chun-Gang ;

Velev, Julian P. ;

Sabirianov, R. F. ;

Zhu, Ziqiang ;

Chu, Junhao ;

Jaswal, S. S. ;

Tsymbal, E. Y. .

PHYSICAL REVIEW LETTERS, 2008, 101 (13)

[10] Controlling the Spin of Co Atoms on Pt(111) by Hydrogen Adsorption [J].

Dubout, Q. ;

Donati, F. ;

Waeckerlin, C. ;

Calleja, F. ;

Etzkorn, M. ;

Lehnert, A. ;

Claude, L. ;

Gambardella, P. ;

Brune, H. .

PHYSICAL REVIEW LETTERS, 2015, 114 (10)

← 1 2 3 4 5 6 →