摘要
We investigate the chiral edge states-induced Josephson current–phase relation in a graphene-based Josephson junction modulated by the off-resonant circularly polarized light and the staggered sublattice potential.By solving the Bogoliubov–de Gennes equation,a φ_(0) Josephson junction is induced in the coaction of the off-resonant circularly polarized light and the staggered sublattice potential,which arises from the fact that the center of-mass wave vector of Cooper pair becomes finite and the opposite center of-mass wave vector to compensate is lacking in the nonsuperconducting region.Interestingly,when the direction of polarization of light is changed,-φ_(0) to φ_(0) transition generates,which generalizes the concept of traditional 0–πtransition.Our findings provide a purely optical way to manipulate a phase-controllable Josephson device and guidelines for future experiments to confirm the presence of graphene-based φ_(0)Josephson junction.
作者
程任翔
于苗
汪洪
曹德亮
李兴鳌
戚凤华
周兴飞
Renxiang Cheng;Miao Yu;Hong Wang;Deliang Cao;Xingao Li;Fenghua Qi;Xingfei Zhou(New Energy Technology Engineering Laboratory of Jiangsu Province,School of Science,Nanjing University of Posts and Telecommunications,Nanjing 210023,China;School of Electronic and Information Engineering,Jinling Institute of Technology,Nanjing 211169,China;School of Electronic Engineering,Nanjing Xiaozhuang University,Nanjing 211171,China)
基金
Project supported by the National Natural Science Foundation of China(Grant Nos.12104232,11805103,and 11804167)
the Natural Science Foundation of Jiangsu Province,China(Grant Nos.BK20190137 and BK20180739)
the Fundamental Research Funds for the Central Universities(Grant Nos.020414380195 and B230201042)
the Jit-b Project(Grant No.201831)
the Natural Science Fund of Nanjing University of Posts and Telecommunications(Grant No.NY222163)。
