首页|Light-modulated graphene-based φ0 Josephson junction and-φ0 to φ0 transition

Light-modulated graphene-based φ0 Josephson junction and-φ0 to φ0 transition

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We investigate the chiral edge states-induced Josephson current-phase relation in a graphene-based Josephson junc-tion modulated by the off-resonant circularly polarized light and the staggered sublattice potential.By solving the Bogoliubov-de Gennes equation,a φ0 Josephson junction is induced in the coaction of the off-resonant circularly po-larized 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 re-gion.Interestingly,when the direction of polarization of light is changed,-φ0 to φ0 transition generates,which generalizes the concept of traditional 0-π transition.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 φ0 Josephson junction.

graphenecircularly polarized lightstaggered sublattice potentialφ0 Josephson junction

程任翔、于苗、汪洪、曹德亮、李兴鳌、戚凤华、周兴飞

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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

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Jiangsu Province,ChinaNatural Science Foundation of Jiangsu Province,ChinaFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central UniversitiesJitb ProjectNatural Science Fund of Nanjing University of Posts and Telecommunications

121042321180510311804167BK20190137BK20180739020414380195B230201042201831NY222163

2024

10.1088/1674-1056/ad04c5

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(2)
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