Dresden 2020 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 65: Poster Session Topological Topics
TT 65.26: Poster
Donnerstag, 19. März 2020, 15:00–19:00, P2/EG
Tunneling spectroscopy of Tl2Mo6Se6 nanowires — •Mengmeng Bai, Yongjian Wang, and Yoichi Ando — Physics Institute II, University of Cologne, 50937 Cologne, Germany
Quasi-one-dimensional Tl2Mo6Se6 is predicted to be a topological superconductor [1]. It is known that a pair of Majorana fermions will be induced at the end of a one-dimensional topological superconductor nanowire. Here we report our tunneling spectroscopy experiments on superconducting Tl2Mo6Se6 nanowires. The Tl2Mo6Se6 nanowires were exfoliated from the fiberlike single crystals. After that, they were fabricated into devices and then measured at temperatures down to 10 mK. A thin layer of Al2O3 is grown as a tunnel barrier for tunneling spectroscopy study. The preliminary tunneling spectroscopy results show rich structures both in and out of the superconducting gap.
[1] S.-M. Huang, C.-H. Hsu, S.-Y. Xu, C.-C. Lee, S.-Y. Shiau, H. Lin, and A. Bansil, Phys. Rev. B 97, 014510 (2018).