Efficiency of quasiparticle evacuation in superconducting devices

Efficiency of quasiparticle evacuation in superconducting devices
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超导装置中准粒子抽空的效率

DOI：
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发表时间：
2011
期刊：
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通讯作者：
H. Courtois
H. Courtois
中科院分区：
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文献类型：
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作者：
S. Rajauria;L. Pascal;P. Gandit;F. Hekking;B. Pannetier;H. Courtois

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在正常的金属-绝缘体-超导体（N-I-S）结中，电荷输运主要由准粒子控制（1）。超导能隙的存在导致准粒子从正常金属中隧穿出来的能量选择性（2，3）。准粒子隧道电流因此伴随着从正常金属到超导体的热传递，该热传递在刚好低于超导能隙的电压偏置（V ≤ ε/e）处最大。对于双结几何形状（S-
In a normal metal - insulator - superconductor (N-I-S) junction, charge transport is mainly governed by quasi- particles (1). The presence of the superconducting en- ergy gapinduces an energy selectivity of quasiparticles tunneling out of the normal metal (2, 3). The quasiparti- cle tunnel current is thus accompanied by a heat trans- fer from the normal metal to the superconductor that is maximum at a voltage bias just below the superconduct- ing gap (V ≤ �/e). For a double junction geometry (S-