Superconductive pumping of nanomechanical vibrations

Abstract

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.

4 pages, 5 figures

References in corpus (6)

• A tunable carbon nanotube electromechanical oscillator
• Cooling a nanomechanical resonator with quantum back-action
• Nonlinear coupling of nano mechanical resonators to Josephson quantum circuits
• Quantum analysis of a linear DC SQUID mechanical displacement detector
• Decoherence and Recoherence in a Vibrating RF SQUID
• Electronic Aharonov-Bohm Effect Induced by Quantum Vibrations

Cited by in corpus (6)

• Charge-vibration interaction effects in normal-superconductor quantum dots
• Non-Equilibrium and Quantum Coherent Phenomena in the Electromechanics of Suspended Nanowires
• The Effect of Mechanical Resonance on Josephson Dynamics
• Ground-state cooling of a suspended nanowire through inelastic macroscopic quantum tunneling in a current-biased Josephson junction
• Strong mechanically-induced effects in DC current-biased suspended Josephson junctions
• Dynamics of a suspended nanowire driven by an ac Josephson current in an inhomogeneous magnetic field