arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2209.04993cond-mat.str-elcond-mat.mes-hallcond-mat.mtrl-sci
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候选拓扑近藤绝缘体SmB6纳米线的自旋选择隧穿

Spin-selective tunneling from nanowires of the candidate topological Kondo insulator SmB6

Anuva Aishwarya, Zhuozhen Cai, Arjun Raghavan, Marisa Romanelli, Xiaoyu Wang, Xu Li, G. D. Gu, Mark Hirsbrunner, Taylor Hughes, Fei Liu, Lin Jiao, Vidya Madhavan

摘要:

将相对论物理学引入量子隧穿可以导致奇异的行为,例如通过克莱因隧穿的完美传输。在这里,我们探测自旋动量锁定的相对论费米子的隧穿特性的设计和实施的隧穿几何,利用纳米线的拓扑近藤绝缘体候选人,SmB 6。将纳米线连接到扫描隧道显微镜针尖的末端,并用于在Neel温度为~50 K的反铁磁体Fe 1.03Te中成像双共线条纹自旋序。在10 K以上,随着拓扑表面态的抑制,反铁磁条纹变得不可见.我们进一步证明了自旋极化的方向与隧穿方向有关。我们的技术建立SmB 6纳米线作为自旋极化电流的理想管道。

英文摘要:

Incorporating relativistic physics into quantum tunneling can lead to exotic behavior such as perfect transmission via Klein tunneling. Here, we probe the tunneling properties of spin-momentum locked relativistic fermions by designing and implementing a tunneling geometry that utilizes nanowires of the topological Kondo insulator candidate, SmB6. The nanowires are attached to the end of scanning tunneling microscope tips, and used to image the bicollinear stripe spin-order in the antiferromagnet Fe1.03Te with a Neel temperature of ~50 K. The antiferromagnetic stripes become invisible above 10 K concomitant with the suppression of the topological surface states. We further demonstrate that the direction of spin-polarization is tied to the tunneling direction. Our technique establishes SmB6 nanowires as ideal conduits for spin-polarized currents.

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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