【摘 要】
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Finite monentum pairing for Cooper pairs in inhomogeneous superconductors represents one of the most fascinating conceptual extensions of the celebrated Bardeen-Cooper-Schrieffer theory of superconduc
【机 构】
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National Laboratory of Solid State Microstructures,Nanjing University,Nanjing,China
【出 处】
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第十八届全国凝聚态理论与统计物理学术会议
论文部分内容阅读
Finite monentum pairing for Cooper pairs in inhomogeneous superconductors represents one of the most fascinating conceptual extensions of the celebrated Bardeen-Cooper-Schrieffer theory of superconductivity.In the past five decades, great endeavors have been paid trying to unveil this novel phase, unfortunately, only indirect evidences have been reported.Here we propose an Andreev interferometer based on a branched Y-junction to directly detect the Cooper pair momentum in the Fulde-Ferrell (FF) superconductor, which provides the most convincing evidence for finite momentum pairing.In this devise, the subgap conductance oscillation is determined only by the phase modulation of the FF superconductor, without and intervention of other uncontrollable phases during the multiple scattings in the Y-junction.This interferometer can have intriguing applicatios in the identification of the possible finite momentum pairing in non-centrosymmetric superconductors.
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