首页|Oscillation of Dzyaloshinskii-Moriya interaction driven by weak electric fields

Oscillation of Dzyaloshinskii-Moriya interaction driven by weak electric fields

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Dzyaloshinskii-Moriya interaction(DMI)is under extensive investigation considering its crucial status in chiral mag-netic orders,such as Néel-type domain wall(DW)and skyrmions.It has been reported that the interfacial DMI originating from Rashba spin-orbit coupling(SOC)can be linearly tuned with strong external electric fields.In this work,we experi-mentally demonstrate that the strength of DMI exhibits rapid fluctuations,ranging from 10％to 30％of its original value,as a function of applied electric fields in Pt/Co/MgO heterostructures within the small field regime(＜10-2 V/nm).Brillouin light scattering(BLS)experiments have been performed to measure DMI,and first-principles calculations show agreement with this observation,which can be explained by the variation in orbital hybridization at the Co/MgO interface in response to the weak electric fields.Our results on voltage control of DMI(VCDMI)suggest that research related to the voltage control of magnetic anisotropy for spin-orbit torque or the motion control of skyrmions might also have to consider the role of the external electric field on DMI as small voltages are generally used for the magnetoresistance detection.

Dzyaloshinskii-Moriya interactionweak electric field control effectRashba spin-orbit couplinginterfacial orbital hybridization

陈润泽、曹安妮、王馨苒、柳洋、杨洪新、赵巍胜

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Fert Beijing Institute,MIIT Key Laboratory of Spintronics,School of Integrated Circuit Science and Engineering,Beihang University,Beijing 100191,China

Beijing Microelectronics Technology Institute,Beijing 100076,China

Beihang-Goertek Joint Microelectronics Institute,Qingdao Research Institute,Beihang University,Qingdao 266000,China

National Laboratory of Solid State Microstructures,School of Physics,Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China

Hefei Innovation Research Institute,Beihang University,Hefei 230013,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaBeijing Municipal Science and Technology ProjectNational Key Technology Program of ChinaProgram of Introducing Talents of Discipline to Universities in ChinaVR Innovation Platform from Qingdao Science and Technology Commission

616278136220401861571023Z2011000042200022017ZX01032101B16001

2024

10.1088/1674-1056/ad0f85

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(2)
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