Mechano-electronic and electro-mechanical energy transfer in mesoscopic superconducting weak links

作者：Shekhter Robert I^*; Gorelik Leonid Y; Sonne Gustav; Jonson Mats

来源：Comptes Rendus Physique, 2012, 13(5): 426-439.

DOI：10.1016/j.crhy.2012.01.002

• Nano-electro-mechanical systems
• Superconducting weak links

In this review we discuss how the nano-electro-mechanical properties of a superconducting weak link, formed by a suspended nanowire bridging two superconductors, can strongly affect mesoscopic effects in both the electronic and the mechanical subsystem. In particular we will discuss how quantum coherence and electron-electron (Coulomb) correlations may result in the possibility to resonantly redistribute energy between the electronic and mechanical degrees of freedom, allowing controllable switching between pumping and cooling of the nano-mechanical vibrations of the suspended nanowire. The two regimes of a given current and a given voltage supplied to the nano-electro-mechanical weak link is considered, resulting respectively in the possibility of ground-state cooling or resonant generation of nano-mechanical vibrations for realistic experimental parameters.

• 出版日期2012-6