Measurement of electron-phonon interaction time of Niobium using heating effect in SIS tunnel junction
Measurement of electron-phonon interaction time of Niobium using heating effect in SIS tunnel junction
复制标题
利用 SIS 隧道结中的热效应测量铌的电子-声子相互作用时间
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
J. Leech
中科院分区：
文献类型：
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作者：
B. Tan;G. Yassin;P. Kittara;J. Leech
用局域振荡器(LO)电源和偏置电压加热SIS隧道结是众所周知的，以前也有过报道。本文提出了一种从700 GHz的SIS器件的实验泵浦I-V曲线中恢复加热参数的新方法，以及耦合的LO功率和嵌入阻抗。由于这是在没有假定LO功率与结温之间的特定幂规律的情况下得到的，因此我们将能够得到超导材料在不同浴温度下的电子-声子相互作用时间？？Eph。我们将推导出一个描述热流方程对温度的依赖关系的幂定律。指数项-超导体-绝缘体-超导体器件，电子-声子相互作用时间，热流，功率定律。
The heating of SIS tunnel junctions by local oscil- lator (LO) power and bias voltage is well known and has been reported previously. In this paper, we present a novel method for recovering the heating parameters from the experimental pumped I-V curves of an SIS device at 700 GHz, together with the coupled LO power and the embedding impedance. Since this is obtained without assuming a particular power law between LO power and junction temperature, we will be able to find ?eph, the electron-phonon interaction time of the superconducting material at various bath temperatures. We would deduce a power law that describes the dependence of the heat flow equation on temperature. Index Terms—Superconductor-insulator-superconductor de- vices, electron-phonon interaction time, heat flow, power law.