Proximity-effect-induced superconductivity by granular Pb film on the surface of Bi2Te3 topological insulator
Proximity-effect-induced superconductivity by granular Pb film on the surface of Bi2Te3 topological insulator
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Bi2Te3拓扑绝缘体表面颗粒状Pb薄膜的邻近效应诱导超导
DOI：
10.7498/aps.62.167401
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发表时间：
2013
影响因子：
1
通讯作者：
Lu Li
中科院分区：
文献类型：
--
作者：
Fan Jie;Ji Zhong-Qing;Yang Chang-Li;Lu Li
拓扑绝缘体的出现为寻找拓扑超导体和Majorana费米子提供了一种可能的途径.为了进一步研究这些发现，人们可能需要通过沉积颗粒状和离散的Pb膜在Bi 2 Te 3表面诱导大面积的邻近超导性。在该实验中，在Bi 2 Te 3晶体上在0.25K以下观察到在9.5nm的距离上的超导状态，所述Bi 2 Te 3晶体的表面沉积有厚度小于20 nm并且以20-30 nm的距离隔开的Pb颗粒。
The appearance of topological insulators provides us with a chance of finding topological superconductors and Majorana fermions. To pursue these findings one might need to induce large areas of proximity superconductivity on the surface of Bi2Te3 by depositing granular and discrete Pb film. In this experiment, a superconducting state over a distance of 9.5 rm is observed below 0.25 K on a Bi2Te3 crystal whose surface is deposited with Pb grains with a thickness of less than 20 nm and separated at a distance of 20-30 nm.