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Producing and imaging quantum turbulence via pair-breaking in superfluid 3 He − B

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Producing and imaging quantum turbulence via pair-breaking in superfluid 3 He − B. / Noble, Theo; Ahlstrom, Sean; Bradley, Ian; Guise, Edward Ashley; Haley, Richard; Kafanov, Sergey; Pickett, George; Poole, Malcolm; Schanen, Roch; Wilcox, Tom; Woods, Andrew; Zmeev, Dmitry; Tsepelin, Viktor.

In: Physical Review B: Condensed Matter and Materials Physics, Vol. 105, No. 17, 174515, 25.05.2022.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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@article{7ab622fa8c8f47c8a65f6683c5820a68,
title = "Producing and imaging quantum turbulence via pair-breaking in superfluid 3 He − B",
abstract = "Destroying superfluidity is a fundamental process and in fermionic superfluid such as He3-B it splits Cooper pairs into thermal excitations, quasiparticles. At the lowest temperatures, a gas of these quasiparticle excitations is tenuous enough for the propagation to be ballistic. We describe here an exploitation of the ballistic quasiparticles as the {"}photons{"}to observe the local destruction of superfluid He3-B by a mechanical resonator. We use a 5 by 5 pixel quasiparticle camera to image an emergence of quasiparticle excitations and a tangle of quantized vortices accompanying the pair-breaking. The detected quantum tangle is asymmetric around the mechanical resonator and is governed by the stability of vortices on the resonator surface. The vortex distribution shows that a conventional production of a quantum tangle via repetitive emission of vortex rings starts on the top surface of the generator and spreads around whole surface at high velocity when escaping vortex rings get retrapped by the moving resonator.",
author = "Theo Noble and Sean Ahlstrom and Ian Bradley and Guise, {Edward Ashley} and Richard Haley and Sergey Kafanov and George Pickett and Malcolm Poole and Roch Schanen and Tom Wilcox and Andrew Woods and Dmitry Zmeev and Viktor Tsepelin",
note = "{\textcopyright} 2022 American Physical Society",
year = "2022",
month = may,
day = "25",
doi = "10.1103/physrevb.105.174515",
language = "English",
volume = "105",
journal = "Physical Review B: Condensed Matter and Materials Physics",
issn = "1098-0121",
publisher = "AMER PHYSICAL SOC",
number = "17",

}

RIS

TY - JOUR

T1 - Producing and imaging quantum turbulence via pair-breaking in superfluid 3 He − B

AU - Noble, Theo

AU - Ahlstrom, Sean

AU - Bradley, Ian

AU - Guise, Edward Ashley

AU - Haley, Richard

AU - Kafanov, Sergey

AU - Pickett, George

AU - Poole, Malcolm

AU - Schanen, Roch

AU - Wilcox, Tom

AU - Woods, Andrew

AU - Zmeev, Dmitry

AU - Tsepelin, Viktor

N1 - © 2022 American Physical Society

PY - 2022/5/25

Y1 - 2022/5/25

N2 - Destroying superfluidity is a fundamental process and in fermionic superfluid such as He3-B it splits Cooper pairs into thermal excitations, quasiparticles. At the lowest temperatures, a gas of these quasiparticle excitations is tenuous enough for the propagation to be ballistic. We describe here an exploitation of the ballistic quasiparticles as the "photons"to observe the local destruction of superfluid He3-B by a mechanical resonator. We use a 5 by 5 pixel quasiparticle camera to image an emergence of quasiparticle excitations and a tangle of quantized vortices accompanying the pair-breaking. The detected quantum tangle is asymmetric around the mechanical resonator and is governed by the stability of vortices on the resonator surface. The vortex distribution shows that a conventional production of a quantum tangle via repetitive emission of vortex rings starts on the top surface of the generator and spreads around whole surface at high velocity when escaping vortex rings get retrapped by the moving resonator.

AB - Destroying superfluidity is a fundamental process and in fermionic superfluid such as He3-B it splits Cooper pairs into thermal excitations, quasiparticles. At the lowest temperatures, a gas of these quasiparticle excitations is tenuous enough for the propagation to be ballistic. We describe here an exploitation of the ballistic quasiparticles as the "photons"to observe the local destruction of superfluid He3-B by a mechanical resonator. We use a 5 by 5 pixel quasiparticle camera to image an emergence of quasiparticle excitations and a tangle of quantized vortices accompanying the pair-breaking. The detected quantum tangle is asymmetric around the mechanical resonator and is governed by the stability of vortices on the resonator surface. The vortex distribution shows that a conventional production of a quantum tangle via repetitive emission of vortex rings starts on the top surface of the generator and spreads around whole surface at high velocity when escaping vortex rings get retrapped by the moving resonator.

U2 - 10.1103/physrevb.105.174515

DO - 10.1103/physrevb.105.174515

M3 - Journal article

VL - 105

JO - Physical Review B: Condensed Matter and Materials Physics

JF - Physical Review B: Condensed Matter and Materials Physics

SN - 1098-0121

IS - 17

M1 - 174515

ER -