Anisotropic Spin Distribution and Perpendicular Magnetic Anisotropy in a Layered Ferromagnetic Semiconductor (Ba,K)(Zn,Mn)2As2

被引：5

作者：

Sakamoto, Shoya ^{[2
,9
]}

Zhao, Guoqiang ^{[1
]}

Shibata, Goro ^{[2
]}

Deng, Zheng ^{[1
]}

Zhao, Kan ^{[1
]}

Wang, Xiancheng ^{[1
]}

Nonaka, Yosuke ^{[2
]}

Ikeda, Keisuke ^{[2
]}

Chi, Zhendong ^{[2
]}

Wan, Yuxuan ^{[2
]}

Suzuki, Masahiro ^{[2
]}

Koide, Tsuneharu ^{[3
]}

Tanaka, Arata ^{[4
]}

Maekawa, Sadamichi ^{[5
,6
]}

Uemura, Yasutomo J. ^{[7
]}

Jin, Changqing ^{[1
]}

Fujimori, Atsushi ^{[2
,8
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[2] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[3] Inst Mat Struct Sci, High Energy Accelerator Res Org KEK, Photon Factory, Tsukuba, Ibaraki 3050801, Japan

[4] Hiroshima Univ, Grad Sch Adv Sci Matter ADSM, Dept Quantum Matter, Higashihiroshima 7398530, Japan

[5] RIKEN, Ctr Emergent Matter Sci CEMS, Wako, Saitama 3510198, Japan

[6] Univ Chinese Acad Sci, Kavli Inst Theoret Sci, Beijing 100190, Peoples R China

[7] Columbia Univ, Dept Phys, New York, NY 10027 USA

[8] Waseda Univ, Dept Appl Phys, Tokyo 1698555, Japan

[9] Univ Tokyo, Inst Solid State Phys, Tokyo 1130033, Japan

来源：

ACS APPLIED ELECTRONIC MATERIALS | 2021年 / 3卷 / 02期

关键词：

ferromagnetic semiconductor; magnetic anisotropy; angle-dependent X-ray magnetic circular dichroism; spintronics; single crystal; CIRCULAR-DICHROISM; ORBITAL-MOMENT; FE; 3D;

D O I：

10.1021/acsaelm.0c00938

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The perpendicular magnetic anisotropy of a layered ferromagnetic semiconductor (Ba,K)(Zn,Mn)(2)As-2 is studied using angle-dependent X-ray magnetic circular dichroism (XMCD) measurements. The large magnetic anisotropy with an anisotropy field of 0.85 T is deduced by fitting the Stoner-Wohlfarth model to the magnetic-field angle dependence of the projected magnetic moment. Transverse XMCD spectra highlight the anisotropic distribution of Mn 3d electrons, where the d(xz), and d(yz), orbitals are less populated than the d(xy) state because of the D-2d splitting that arises from the elongated MnAs4 tetrahedra. The magnetic anisotropy originates from the degeneracy lifting of p-d(xz), d(yz) hybridized states at the Fermi level. Namely, spin-orbit coupling lifts their degeneracy and induces energy gain when spins align along the z direction. The present system offers another tuning knob to control magnetic anisotropy through atomic orbital engineering.

引用

页码：789 / 794

页数：6

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