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arXiv 2305.03422cond-mat.mes-hall
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利用固态离子门控实现Ising网络中磁耦合的电编程

Electrically programmable magnetic coupling in an Ising network exploiting solid-state ionic gating

Chao Yun, Zhongyu Liang, Aleš Hrabec, Zhentao Liu, Mantao Huang, Leran Wang, Yifei Xiao, Yikun Fang, Wei Li, Wenyun Yang, Yanglong Hou, Jinbo Yang, Laura J. Hey… 展开作者

Chao Yun, Zhongyu Liang, Aleš Hrabec, Zhentao Liu, Mantao Huang, Leran Wang, Yifei Xiao, Yikun Fang, Wei Li, Wenyun Yang, Yanglong Hou, Jinbo Yang, Laura J. Heyderman, Pietro Gambardella, Zhaochu Luo

AI总结:

通过固态离子门控电压调控磁各向异性,实现Ising纳米磁体间耦合的可逆切换,并在人工自旋冰中展示电压控制相变,构建电可编程Ising网络,为纳米磁体逻辑器件和神经形态计算开辟新途径。

摘要:

磁耦合纳米磁体的二维阵列提供了一个介观平台,用于探索集体现象以及实现广泛的自旋电子器件。特别是,磁耦合在决定合作行为的性质以及为基于纳米磁体的器件提供新功能方面起着关键作用。在这里,我们构建了耦合的Ising类纳米磁体,其中相邻纳米磁区域之间的耦合可以通过固态离子门控在平行和反平行之间可逆地转换。这是通过电压控制纳米尺寸区域中的磁各向异性实现的,其中对称交换相互作用有利于平行排列,而反对称交换相互作用,即Dzyaloshinskii-Moriya相互作用,有利于反平行排列。将这一概念应用于二维晶格,我们展示了人工自旋冰中电压控制的相变。此外,我们实现了对单个耦合的可寻址控制,并实现了电可编程的Ising网络,这为设计基于纳米磁体的逻辑器件和神经形态计算机开辟了新的途径。

英文摘要:

Two-dimensional arrays of magnetically coupled nanomagnets provide a mesoscopic platform for exploring collective phenomena as well as realizing a broad range of spintronic devices. In particular, the magnetic coupling plays a critical role in determining the nature of the cooperative behaviour and providing new functionalities in nanomagnet-based devices. Here, we create coupled Ising-like nanomagnets in which the coupling between adjacent nanomagnetic regions can be reversibly converted between parallel and antiparallel through solid-state ionic gating. This is achieved with the voltage-control of magnetic anisotropies in a nanosized region where the symmetric exchange interaction favours parallel alignment and the antisymmetric exchange interaction, namely the Dzyaloshinskii-Moriya interaction, favours antiparallel alignment. Applying this concept to a two-dimensional lattice, we demonstrate a voltage-controlled phase transition in artificial spin ices. Furthermore, we achieve an addressable control of the individual couplings and realize an electrically programmable Ising network, which opens up new avenues to design nanomagnet-based logic devices and neuromorphic computers

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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