Premium
High Quality Superconductor–Normal Metal Junction Made on the Surface of MoS 2 Flakes
Author(s) -
Chen Qihong,
Liang Lei,
Ali El Yumin Abdurrahman,
Lu Jianming,
Zheliuk Oleksandr,
Ye Jianting
Publication year - 2017
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201700181
Subject(s) - materials science , superconductivity , andreev reflection , metal , condensed matter physics , surface (topology) , optoelectronics , ionic bonding , layer (electronics) , nanotechnology , ion , chemistry , metallurgy , physics , geometry , mathematics , organic chemistry
A superconductor–normal metal (SN) junction is fabricated on the surface of a few‐layer MoS 2 flake. Superconductivity is induced by ionic liquid gating, and an h ‐BN flake is used to locally separate ionic liquid from the surface of MoS 2 . The h ‐BN covered channel remains semiconducting, therefore an SN junction forms at the interface between the exposed and h ‐BN covered MoS 2 channel. Transport properties at the SN junction are studied at low temperatures and under magnetic fields. The probability of observing Andreev reflection is discussed based on the BTK model.