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20 August 2020 The demonstration of Majorana zero modes in scalable gold nanowires
Peng Wei, Sujit Manna, Yingming Xie, Kam Tuen Law, Patrick Lee, Jagadeesh Moodera
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Proceedings Volume 11470, Spintronics XIII; 114700L (2020) https://doi.org/10.1117/12.2565976
Event: SPIE Nanoscience + Engineering, 2020, Online Only
Abstract
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.
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Peng Wei, Sujit Manna, Yingming Xie, Kam Tuen Law, Patrick Lee, and Jagadeesh Moodera "The demonstration of Majorana zero modes in scalable gold nanowires", Proc. SPIE 11470, Spintronics XIII, 114700L (20 August 2020); https://doi.org/10.1117/12.2565976
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KEYWORDS
Gold
Nanowires
Superconductivity
Heterojunctions
Superconductors
System on a chip
Magnetism
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