论文标题
来自候选拓扑围栏绝缘子SMB6的纳米线的自旋选择性隧道
Spin-selective tunneling from nanowires of the candidate topological Kondo insulator SmB6
论文作者
论文摘要
将相对论物理学融入量子隧道中可以导致外来行为，例如通过克莱因隧道的完美传播。在这里，我们通过设计和实施隧道几何形状来探测自旋摩托杆锁定相对论费米的隧道特性，该几何形状利用了拓扑昆多绝缘子候选者SMB6的纳米线。纳米线连接到扫描隧道显微镜尖端的末端，并用于对抗铁素型旋转式旋转顺序进行成像，抗铁磁性旋转序列的Neel温度约为50 k。抗fiferromagagnetic条带在上述10 k上与抑制抑制拓扑表面状态。我们进一步证明，自旋极化的方向与隧道方向相关。我们的技术将SMB6纳米线建立为自旋偏振电流的理想导管。
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.
