摘要
Antiferromagnets offer great potential for high-speed data processing applications,as they can expend spintronic devices from a static storage and gigahertz frequency range to the terahertz range.However,their zero net magnetization makes them difficult to manipulate and detect.In recent years,there has been a lot of attention given to the ultrafast manipulation of magnetic order using ultra-short single laser pulses,but it remains unknown whether a similar scenario can be observed in antiferromagnets.In this work,we demonstrate the manipulation of antiferromagnets with a single femtosecond laser pulse in perpendicular exchange-biased Co/Ir Mn/Co Gd trilayers.We study the dual exchange bias interlayer interaction in quasi-static conditions and competition in ultrafast antiferromagnet rearrangement.Our results show that,compared to conventional ferromagnetic/antiferromagnetic systems,the Ir Mn antiferromagnet can be ultrafast and efficiently manipulated by the coupled Co Gd ferrimagnetic layer,which paves the way for potential energy-efficient spintronic devices.
作者
郭宗夏
Gregory Malinowski
Pierre Vallobra
彭懿
许涌
Stéphane Mangin
赵巍胜
Michel Hehn
张博宇
Zongxia Guo;Gregory Malinowski;Pierre Vallobra;Yi Peng;Yong Xu;Stéphane Mangin;Weisheng Zhao;Michel Hehn;Boyu Zhang(Fert Beijing Institute,School of Integrated Science and Engineering,Beihang University,Beijing 100191,China;Universitéde Lorraine,CNRS,IJL,Nancy,54011 France;Hefei Innovation Research Institute,Beihang University,Hefei 230012,China)
基金
National Key Research and Development Program of China(Grant No.2022YFB4400200)
the National Natural Science Foundation of China(Grant Nos.12104030,12104031,and 61627813)
the Program of Introducing Talents of Discipline to Universities(Grant No.B16001)
the Beijing Municipal Science and Technology Project(Grant No.Z201100004220002)
China Postdoctoral Science Foundation(Grant No.2022M710320)
China Scholarship Council
supported by the ANR-15-CE24-0009 UMAMI and the ANR-20-CE09-0013
by the Institute Carnot ICEEL for the project“Optic-switch”and Matelas
by the Région Grand Est
by the Metropole Grand Nancy
by the impact project LUE-N4S
part of the French PIA project“Lorraine Universitéd’Excellence,”reference ANR-15-IDEX-04-LUE
by the“FEDERFSE Lorraine et Massif Vosges 2014-2020,”a European Union Program。
