Two-dimensional graphene superconducting and hot electron bolometer research based-on metal atoms surface modification

26 Jul 2019, 12:45
15m
Auditorium G. Testori (Milano)

Auditorium G. Testori

Milano

Piazza Città di Lombardia, 1, 20124 Milano MI
Oral Presentation Low Temperature Detector fabrication techniques and materials Orals LM 003

Speaker

Dr Zhang Hengbin (Qian Xuesen Laboratory of Space Technology)

Description

Due to the very weak electro-acoustic coupling of graphene, the energy transfer between the electrons and the lattice is very weak. In addition, the electronic heat capacity of graphene itself is very small. Therefore, it has a wide range of application prospects in fields such as high-sensitivity, high-speed heat radiation detectors. This research raise up a new bolometer based on superconductor-graphene-superconductor junctions. The main research contents include: 1) Preparation and performance optimization of superconductor-graphene-superconductor josephson devices based on hard mask process for fixed-point transfer of zinc oxide nanowires; 2) Through study and analyz the electrical transport properties of graphene josephson devices, in-depth studied the physical mechanism of proximity effect based-on graphene josephson juctions. (3) Explore the possibility of inducing two-dimensional superconductivity of graphene by surface modification of metal atoms, revealing the unique superconductivity of graphene and the difference with one-dimensional superconductors.The experimental results show that the response rate of this graphene josephson devices is extremely high, reaching 6×106 V/W, verifying its feasibility for high-resolution electronic thermal radiation detection

Less than 5 years of experience since completion of Ph.D Y
Student (Ph.D., M.Sc. or B.Sc.) N

Primary author

Dr Zhang Hengbin (Qian Xuesen Laboratory of Space Technology)

Presentation Materials