Nanoelectromechanics of superconducting weak links

被引：7

作者：

Parafilo, A. V. ^{[1
]}

Krive, I. V. ^{[1
,2
,3
]}

Shekhter, R. I. ^{[2
]}

Jonson, M. ^{[2
,4
,5
]}

机构：

[1] Natl Acad Sci Ukraine, B Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine

[2] Univ Gothenburg, Dept Phys, SE-41296 Gothenburg, Sweden

[3] Kharkov Natl Univ, Dept Phys, UA-61077 Kharkov, Ukraine

[4] Heriot Watt Univ, Dept Phys, SUPA, Edinburgh EH14 4AS, Midlothian, Scotland

[5] Konkuk Univ, Div Quantum Phases & Devices, Dept Phys, Seoul 143701, South Korea

来源：

LOW TEMPERATURE PHYSICS | 2012年 / 38卷 / 04期

关键词：

JOSEPHSON CURRENT; COULOMB-BLOCKADE; TRANSPORT; CHARGE; INSTABILITY; COHERENCE;

D O I：

10.1063/1.3699628

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Nanoelectromechanical effects in superconducting weak links are considered. Three different superconducting devices are studied: (i) a single-Cooper-pair transistor, (ii) a transparent SNS junction, and (iii) a single-level quantum dot coupled to superconducting electrodes. The electromechanical coupling is due to electrostatic or magnetomotive forces acting on a movable part of the device. It is demonstrated that depending on the frequency of mechanical vibrations the electromechanical coupling could either suppress or enhance the Josephson current. Nonequilibrium effects associated with cooling of the vibrational subsystem or pumping energy into it at low bias voltages are discussed. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3699628]

引用

页码：273 / 282

页数：10

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