Quantitative study of quasiparticle traps using the single-Cooper-pair transistor
Quantitative study of quasiparticle traps using the single-Cooper-pair transistor
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DOI：
10.1103/physrevb.77.100501
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发表时间：
2008-03-01
影响因子：
3.7
通讯作者：
Clark, R. G.
中科院分区：
文献类型：
--
作者：
Court, N. A.;Ferguson, A. J.;Clark, R. G.
我们使用射频反射计来测量单库珀对晶体管中的准粒子隧穿速率。研究了岛附近带准粒子阱和不带准粒子阱的装置。在准粒子陷阱的情况下，观察到准粒子隧穿到岛的速率降低了10(2)到10(3)倍。在准粒子阱样品中，我们还测量到准粒子在岛外的隧穿速率相应降低。
We use radio-frequency reflectometry to measure quasiparticle tunneling rates in the single-Cooper- pair transistor. Devices with and without quasiparticle traps in proximity to the island are studied. A 10(2)- to 10(3)- fold reduction in the quasiparticle tunneling rate onto the island is observed in the case of quasiparticle traps. In the quasiparticle trap samples we also measure a commensurate decrease in quasiparticle tunneling rate off the island.