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arXiv 2212.01072cond-mat.mes-hallcond-mat.mtrl-sci
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拓扑半金属纳米线中费米弧自旋输运的三端电调制

Electric modulation of the Fermi arc spin transport via three-terminal configuration in the topological semimetal nanowires

Guang-Yu Zhu, Ji-Ai Ning, Jian-Kun Wang, Xin-Jie Liu, Jing-Zhi Fang, Ze-Nan Wu, Jia-Jie Yang, Ben-Chuan Lin, Shuo Wang, Dapeng Yu

摘要:

自旋动量锁定是拓扑表面态的一个重要特征,在自旋电子学中起着重要的作用。非磁性系统中自旋动量锁定保护下的电流诱导自旋极化的电学探测为自旋电子学的发展提供了一个新的平台,而以前的研究大多是基于磁性材料。本文采用三端几何结构研究了Dirac半金属Cd_3As_2的自旋输运测量,观察到了高阻态和低阻态的磁滞回线信号。通过反转电流方向来反转滞后,这说明了Cd 3As 2的自旋-动量锁定特征。此外,我们通过三端结构对费米弧的电调制实现了自旋信号的通断状态,这使得Cd 3As 2在自旋场效应晶体管中具有很大的潜力。

英文摘要:

Spin momentum locking is a key feature of the topological surface state, which plays an important role in spintronics. The electrical detection of current-induced spin polarization protected by the spin momentum locking in non-magnetic systems provides a new platform for developing spintronics while previous studies were mostly based on magnetic materials. In this study, the spin transport measurement of Dirac semimetal Cd3As2 was studied by the three-terminal geometry, and a hysteresis loop signal with high resistance and low resistance state was observed. The hysteresis was reversed by reversing the current direction, which illustrates the spin-momentum locking feature of Cd3As2. Furthermore, we realized the on-off states of the spin signals through electric modulation of the Fermi arc via the three-terminal configuration, which enables the great potential of Cd3As2 in spin field-effect transistors.

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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