The demonstration of Majorana zero modes in scalable gold nanowires
The demonstration of Majorana zero modes in scalable gold nanowires
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可扩展金纳米线中马约拉纳零模式的演示
DOI：
10.1117/12.2565976
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Moodera, Jagadeesh
中科院分区：
文献类型：
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作者：
Wei, Peng;Manna, Sujit;Xie, Yingming;Law, Kam Tuen;Lee, Patrick;Moodera, Jagadeesh
马约拉纳零模（MZM）预计将出现在材料异质结构结合超导性，铁磁性和自旋轨道耦合（SOC）。特别是，诱导超导性和磁交换相互作用在定义良好的肖克莱表面态（SS）的高品质的Au（111）层，其本质上具有强大的SOC，已被预测为一个很好的平台MBS。在这次演讲中，我将首先介绍我们在外延生长的Au（111）异质结构中成功地制造这种异质结构。利用电子隧穿谱，我们将研究Au（111）薄膜二维超导态的超导特征，以及这种超导态在平面塞曼场下的行为。第二，我将展示一对MZM在一个制造的Au（111）纳米线系统的证据。我还将展示这种系统的可扩展性，以及为什么它将使未来的MZM编织电路。
Majorana zero modes (MZMs) are expected to emerge in material heterostructures combining superconductivity, ferromagnetism, and spin-orbit coupling (SOC). Particularly, inducing superconductivity and magnetic exchange interactions in well-defined Shockley surface states (SS) of high quality ultrathin Au(111) layers, which intrinsically have strong SOC, has been predicted as an excellent platform for MBS. In this talk, I will first present our success in creating such heterostructure in epitaxially grown Au(111) heterostructures. By means of electron tunneling spectroscopy, I will show signatures of superconductivity induced in the two-dimensional SS of Au(111) thin film, as well as the behavior of such superconducting state under a planar Zeeman field. Second, I will show the evidence of a pair of MZMs in a fabricated Au(111) nanowire system. I will also demonstrate the scalability of such system and why it will enable future MZMs braiding circuit.