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Detecting a phonon flux in superfluid 4He by a nanomechanical resonator

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The dataset for the paper: "Detecting a phonon flux in superfluid 4He by a nanomechanical resonator", accepted to Physical Review B as a Rapid communication.

Abstract: Nanoscale mechanical resonators are widely utilized to provide high sensitivity force detectors. Here we demonstrate that such high quality factor resonators immersed in superfluid 4He can be excited by a modulated flux of phonons. A nanosized heater immersed in superfluid 4He acts as a source of ballistic phonons in the liquid -- ``phonon wind''. When the modulation frequency of the phonon flux matches the resonance frequency of the mechanical resonator, the motion of the latter can be excited. This ballistic thermomechanical effect can potentially open up new types of experiments in quantum fluids.
Date made available27/01/2020
PublisherLancaster University
Date of data production2018

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