Nanomechanical vibrating wire resonator for phonon spectroscopy in Helium

Abstract

We demonstrate how to build a vibrating wire resonator for phonon excitation in liquid helium. The resonator is designed as a nanoscopic mechanically flexible beam machined out of a semiconductor/metal-hybrid. Quenching of the mechanical resonance around 100 MHz by phonon excitation in liquid ^4He at 4.2 K is shown. First measurements operating the nano-resonator in a dilution of ^3He/^4He at 30 mK are presented.

4pages, 4 figures

References in corpus (1)

• Nanomechanical resonators operating as charge detectors in the nonlinear regime

Cited by in corpus (5)

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• Silicon Vibrating Wires at Low Temperatures
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• Detecting the "phonon wind" in superfluid ${}^4\mathrm{He}$ by a nanomechanical resonator
• Phonon coupling between a nanomechanical resonator and a quantum fluid