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Superconducting pumping of nanomechanical vibrations

Gustav Sonne ; Robert I. Shekhter ; Leonid Y. Gorelik (Institutionen för teknisk fysik, Kondenserade materiens teori) ; Sergeij I. Kulinich ; Mats Jonson
Physical Review B (1098-0121). Vol. 78 (2008), p. 144501.
[Artikel, refereegranskad vetenskaplig]

We demonstrate that a supercurrent can pump energy from a battery that provides a voltage bias into nanomechanical vibrations. Using a device containing a nanowire Josephson weak link as an example we show that a nonlinear coupling between the supercurrent and a static external magnetic field leads to a Lorentz force that excites bending vibrations of the wire at resonance conditions. We also demonstrate the possibility to achieve more than one regime of stationary nonlinear vibrations and how to detect them via the associated dc Josephson currents and we discuss possible applications of such a multistable nanoelectromechanical dynamics.



Denna post skapades 2008-10-03.
CPL Pubid: 74757

 

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Institutioner (Chalmers)

Institutionen för fysik (GU) (GU)
Institutionen för teknisk fysik, Kondenserade materiens teori (1900-2015)

Ämnesområden

Mesoskopisk fysik

Chalmers infrastruktur