Spatially resolved gap closing in single Josephson junctions constructed on Bi2Te3 surface

doi:10.1088/1674-1056/25/11/117402

Abstract

Full gap closing is a prerequisite for hosting Majorana zero modes in Josephson junctions on the surface of topological insulators. Previously, we have observed direct experimental evidence of gap closing in Josephson junctions constructed on Bi₂Te₃ surface. In this paper we report further investigations on the position dependence of gap closing as a function of magnetic flux in single Josephson junctions constructed on Bi₂Te₃ surface.

Keywords: topological insulator proximity effect Josephson junction Majorana zero mode

Received: 11 April 2016
Revised: 10 May 2016
Accepted manuscript online:

PACS:	74.45.+c	(Proximity effects; Andreev reflection; SN and SNS junctions)
	03.65.Vf	(Phases: geometric; dynamic or topological)
	71.70.Ej	(Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect)
	73.40.-c	(Electronic transport in interface structures)

Fund:

Project supported by the National Basic Research Program of China (Grant Nos. 2009CB929101 and 2011CB921702), the National Natural Science Foundation of China (Grant Nos. 91221203, 11174340, 11174357, 91421303, and 11527806), and the Strategic Priority Research Program B of the Chinese Academy of Sciences (Grant No. XDB07010100).

Corresponding Authors: Li Lu
E-mail: lilu@iphy.ac.cn

Cite this article:

Yuan Pang(庞远), Junhua Wang(王骏华), Zhaozheng Lyu(吕昭征), Guang Yang(杨光), Jie Fan(樊洁), Guangtong Liu(刘广同), Zhongqing Ji(姬忠庆), Xiunian Jing(景秀年), Changli Yang(杨昌黎), Li Lu(吕力) Spatially resolved gap closing in single Josephson junctions constructed on Bi₂Te₃ surface 2016 Chin. Phys. B 25 117402

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Spatially resolved gap closing in single Josephson junctions constructed on Bi2Te3 surface

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Spatially resolved gap closing in single Josephson junctions constructed on Bi₂Te₃ surface