Tunneling Conductance in dx2-y2+idxy Mixed Wave Superconductor Graphene Junctions |
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Authors: | LI Xiao-Wei |
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Institution: | Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, Huaiyin Normal University, Huanyin 223300, China
School of Physics and Electronic Electrical Engineering , Huaiyin Normal University, Huaian 223300, China |
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Abstract: | Using the extended Blonder-Tinkham-Klapwijk formalism, we investigate the conductance spectra of normal metal/dx2-y2+idxy mixed wave superconductor graphene junctions. It is found that the conductance spectra vary strongly with the orientation of the gap and the amplitude ratio (Δ1/Δ0) of two components for dx2-y2+idxy mixed wave. The zero bias conductance isnearly 2 and the conductance peak vanishes in doped graphene forα=0 and Δ1/Δ0=1. The conductance increases with increasing the amplitude ratio of two components for α=π/4 and Δ1/Δ0=1. The ZBCP becomesobservable wide with 1F/Δ0<100 for α=π/4 and Δ1/Δ0=1. This property is different from that in normal metal/dx2-y2 wave superconductor graphenejunctions. |
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Keywords: | dx2-y2+idxy wave superconductor graphene tunneling conductance |
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