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Probing superfluid 4He with high-frequency nanomechanical resonators down to mK temperatures

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Probing superfluid 4He with high-frequency nanomechanical resonators down to mK temperatures. / Guénault, Tony; Guthrie, Andrew; Haley, Richard; Kafanov, Sergey; Pashkin, Yuri; Pickett, George; Poole, Malcolm; Schanen, Roch; Tsepelin, Viktor; Zmeev, Dmitry; Collin, Eddy; Maillet, Oliver; Gazizulin, Rasul.

In: Physical Review B: Condensed Matter and Materials Physics, Vol. 100, 020506, 17.07.2019.

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@article{a2e0c8265ca448eda6d145fca4ec4a83,
title = "Probing superfluid 4He with high-frequency nanomechanical resonators down to mK temperatures",
abstract = "Superfluids, such as superfluid 3He and 4He, exhibit a broad range of quantum phenomena and excitations which are unique to these systems. Nanoscale mechanical resonators are sensitive and versatile force detectors with the ability to operate over many orders of magnitude in damping. Using nanomechanical-doubly clamped beams of extremely high-quality factors Q>106, we probe superfluid 4He from the superfluid transition temperature down to mK temperatures at frequencies up to 11.6 MHz. Our studies show that nanobeam damping is dominated by hydrodynamic viscosity of the normal component of 4He above 1K. In the temperature range 0.3-0.8K, the ballistic quasiparticles (phonons and rotons) determine the beams' behavior. At lower temperatures, damping saturates and is determined either by magnetomotive losses or acoustic emission into helium. It is remarkable that all these distinct regimes can be extracted with just a single device, despite damping changing over six orders of magnitude.",
keywords = "NEMS, Superfluid 4He, Quantum fluids",
author = "Tony Gu{\'e}nault and Andrew Guthrie and Richard Haley and Sergey Kafanov and Yuri Pashkin and George Pickett and Malcolm Poole and Roch Schanen and Viktor Tsepelin and Dmitry Zmeev and Eddy Collin and Oliver Maillet and Rasul Gazizulin",
year = "2019",
month = jul
day = "17",
doi = "10.1103/PhysRevB.100.020506",
language = "English",
volume = "100",
journal = "Physical Review B: Condensed Matter and Materials Physics",
issn = "1098-0121",
publisher = "AMER PHYSICAL SOC",

}

RIS

TY - JOUR

T1 - Probing superfluid 4He with high-frequency nanomechanical resonators down to mK temperatures

AU - Guénault, Tony

AU - Guthrie, Andrew

AU - Haley, Richard

AU - Kafanov, Sergey

AU - Pashkin, Yuri

AU - Pickett, George

AU - Poole, Malcolm

AU - Schanen, Roch

AU - Tsepelin, Viktor

AU - Zmeev, Dmitry

AU - Collin, Eddy

AU - Maillet, Oliver

AU - Gazizulin, Rasul

PY - 2019/7/17

Y1 - 2019/7/17

N2 - Superfluids, such as superfluid 3He and 4He, exhibit a broad range of quantum phenomena and excitations which are unique to these systems. Nanoscale mechanical resonators are sensitive and versatile force detectors with the ability to operate over many orders of magnitude in damping. Using nanomechanical-doubly clamped beams of extremely high-quality factors Q>106, we probe superfluid 4He from the superfluid transition temperature down to mK temperatures at frequencies up to 11.6 MHz. Our studies show that nanobeam damping is dominated by hydrodynamic viscosity of the normal component of 4He above 1K. In the temperature range 0.3-0.8K, the ballistic quasiparticles (phonons and rotons) determine the beams' behavior. At lower temperatures, damping saturates and is determined either by magnetomotive losses or acoustic emission into helium. It is remarkable that all these distinct regimes can be extracted with just a single device, despite damping changing over six orders of magnitude.

AB - Superfluids, such as superfluid 3He and 4He, exhibit a broad range of quantum phenomena and excitations which are unique to these systems. Nanoscale mechanical resonators are sensitive and versatile force detectors with the ability to operate over many orders of magnitude in damping. Using nanomechanical-doubly clamped beams of extremely high-quality factors Q>106, we probe superfluid 4He from the superfluid transition temperature down to mK temperatures at frequencies up to 11.6 MHz. Our studies show that nanobeam damping is dominated by hydrodynamic viscosity of the normal component of 4He above 1K. In the temperature range 0.3-0.8K, the ballistic quasiparticles (phonons and rotons) determine the beams' behavior. At lower temperatures, damping saturates and is determined either by magnetomotive losses or acoustic emission into helium. It is remarkable that all these distinct regimes can be extracted with just a single device, despite damping changing over six orders of magnitude.

KW - NEMS

KW - Superfluid 4He

KW - Quantum fluids

U2 - 10.1103/PhysRevB.100.020506

DO - 10.1103/PhysRevB.100.020506

M3 - Journal article

VL - 100

JO - Physical Review B: Condensed Matter and Materials Physics

JF - Physical Review B: Condensed Matter and Materials Physics

SN - 1098-0121

M1 - 020506

ER -