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首页> 外文期刊>Physical review. B, Condensed Matter And Materials Physics >Conductance enhancement due to resonant tunneling into the subgap vortex core states in normal metal/superconductor ballistic junctions
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Conductance enhancement due to resonant tunneling into the subgap vortex core states in normal metal/superconductor ballistic junctions

机译:由于在正常金属/超导体弹道结中共振隧穿到亚能隙涡核状态而导致的电导增强

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摘要

We investigate the low-energy quantum transport in ballistic normal metal-insulator-superconductor junction exposed to a magnetic field, creating Abrikosov vortices in the superconducting region. Within the Bogolubov-de Gennes theory, we show that the presence of the subgap quasiparticle states localized within the vortex cores near the junction interface leads to the strong resonant enhancement of Andreev reflection probability, and the normal-to-supercurrent conversion. The corresponding increase of charge conductance is determined by the distance from the vortex chain to the junction interface, which can be controlled by the applied magnetic field.
机译:我们研究了暴露于磁场的弹道法向金属-绝缘体-超导体结中的低能量子传输,在超导区域中产生了Abrikosov涡旋。在Bogolubov-de Gennes理论中,我们证明了位于结界面附近的涡核内局部存在的亚能隙准粒子状态会导致Andreev反射概率的强共振增强,以及从法向超电流的转换。电荷电导率的相应增加取决于从涡链到结界面的距离,该距离可以由施加的磁场控制。

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