Spin-Orbit Effects in CoFeB/MgO Heterostructures with Heavy Metal Underlayers

被引：11
|
作者：
Torrejon, Jacob [1 ]
Kim, Junyeon [2 ]
Sinha, Jaivardhan [3 ]
Hayashi, Masamitsu [4 ,5 ]
机构：
[1] CNRS Thales, Unite Mixte Phys, 1 Ave Augustin Fresnel, F-91767 Palaiseau, France
[2] RIKEN, Ctr Emergent Matter Sci, 2-1 Hirosawa, Wako, Saitama 3510198, Japan
[3] SN Bose Natl Ctr Basic Sci, Dept Condensed Matter Phys & Mat Sci, Themat Unit Excellence Nanodevice Technol, Kolkata 700106, India
[4] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan
[5] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
来源：
SPIN | 2016年 / 6卷 / 02期
基金：
日本学术振兴会;
关键词：
Spin orbit interaction; magnetic heterostructures; spin Hall effect; current induced torque; spin Hall magnetoresistance; chiral magnetism; Dzyaloshinskii-Moriya interaction; perpendicular magnetic anisotropy; CURRENT-DRIVEN DYNAMICS; MAGNETIC DOMAIN-WALLS; ROOM-TEMPERATURE; PHASE-TRANSFORMATION; EFFECTIVE-FIELD; THIN-FILMS; TORQUE; ANISOTROPY; CHIRALITY; LAYER;
D O I：
10.1142/S2010324716400026
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We study effects originating from the strong spin-orbit coupling in CoFeB/MgO heterostructures with heavy metal ( HM) underlayers. The perpendicular magnetic anisotropy at the CoFeB/MgO interface, the spin Hall angle of the heavy metal layer, current induced torques and the Dzyaloshinskii-Moriya interaction at the HM/CoFeB interfaces are studied for films in which the early 5d transition metals are used as the HM underlayer. We show how the choice of the HM layer influences these intricate spin-orbit effects that emerge within the bulk and at interfaces of the heterostructures.
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页数：14
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