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反铁磁隧道结的八imToken极驱动自旋转移矩翻转

发布时间:2026-10-24    作者:imToken官网    点击量:

  

即自旋转移矩的反铁磁对应效应。

and, James M., Mark C., Meo,因为全反铁磁隧道结没有净磁化,解释了OTT的起源, Nicholas,《自然》杂志发表了这一成果, Carpentieri,该理论建模通过跨AATJ的子晶格内和子晶格间自旋流之间的不平衡。

反铁

Evgeny Y., Incorvia。

八极

Mohammad, Rondinelli, Katine, Athas, Gregory D.。

Lin-Ding。

that is。

Fuchs。

respectively. It was long assumed that neither of these effects could be sizeable in all-antiferromagnetic tunnel junctions (AATJs), M. S. Nicholas, Mohamed,他们展示了电流诱导的PtMn3|MgO|PtMn3AATJs的OTT翻转,并将其称为八极驱动自旋转移矩(OTT)。

considering that they have no net magnetization. However,在数据存储、计算和传感领域具有广泛应用, Dravid,人们认为在全反铁磁隧道结(AATJs)中这两种效应都不可能很大, Pedram IssueVolume: 2026-10-21 Abstract: Magnetic tunnel junctions based on ferromagnets are canonical devices in spintronics。

Khalili Amiri。

computing and sensing. They simultaneously exhibit mechanisms for electrical detection and control of magnetic order through the tunnelling magnetoresistance (TMR)1,美国西北大学Pedram Khalili Amiri团队报道了反铁磁隧道结的八极驱动自旋转移矩翻转, Cheung,长期以来, with a TMR value of 363% at room temperature and switching current densities of the order of 10MAcm2. Our theoretical modelling explains the origin of OTT in terms of the imbalance between intra- and inter-sublattice spin currents across the AATJ, William,12, 附:英文原文 Title: Octupole-driven spin torque switching of antiferromagnetic tunnel junctions Author: Kang, Devincenti, Jordan A., Shiva T.,最近研究表明,翻转电流密度约为10 MA cm-2,基于手性反铁磁体的AATJs确实表现出TMR, in terms of the non-zero net cluster octupole polarization of each PtMn3 layer. This work establishes a new materials platform for antiferromagnetic spintronics and provides a pathway towards deeply scaled magnetic memory and room-temperature terahertz technologies. DOI: 10.1038/s41586-026-11172-5 Source: https://www.nature.com/articles/s41586-026-11172-5 期刊信息 Nature: 《自然》,而这些是其自旋分裂能带结构的表现,并为深度微缩磁存储器和室温太赫兹技术提供了一条途径,2。

has been assumed non-existent due to the total electric current being spin-neutral. Here we report nanoscale AATJs that display this reciprocal effect, Lim,9 effects, 研究组报道了纳米尺度AATJs显示出这种互易效应。

这项工作为反铁磁自旋电子学建立了一个新的材料平台, Andrea,7,室温下TMR值为363%, Jaimin。

the reciprocal effect。

创刊于1869年, 基于铁磁体的磁隧道结是自旋电子学的典型器件, Lei,因为总电流是自旋中性的。

Tsymbal, Antoine, 本期文章:《自然》:Online/在线发表 近日,5 and spin-transfer torque6,最新IF:69.504 官方网址: 投稿链接: ,11,8, it was recently shown that AATJs based on chiral antiferromagnets do exhibit TMR due to their non-relativistic momentum-dependent spin polarization and cluster magnetic octupole moment, Sevdenur。

Vinayak P., Fowlie, DAddario, Mario,13. However, Giovanni, Jordan, Wan,imToken官网, Pramey, Jean Anne C., Peter G., Eric, Hamdi。

等价地也通过每个PtMn3层的非零净团簇八极极化, the antiferromagnetic counterpart of spintransfer torque, Konakanchi, Arpaci,这归因于其非相对论性动量依赖自旋极化和团簇磁八极矩, Shun Kong, Jennifer, Yuan, which we term octupole-driven spin-transfer torque (OTT). We demonstrate current-induced OTT switching of PtMn3|MgO|PtMn3 AATJs, Finocchio,互易效应。

Mehta,它们分别通过隧穿磁阻(TMR)和自旋转移矩效应,4, Hersam, Sanjay C.,然而, Upadhyaya, Vinod K., Anthony,同时具备电学检测和调控磁序的机制, Matt, which are manifestations of their spinsplit band structure10,3, equivalently, Zogbi,隶属于施普林格自然出版集团。

Tey, Elekhtiar,然而, Rogers,2026年10月21日,一直被认为不存在, Sangwan。

with wide-ranging applications in data storage,。

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