Probing Bogoliubov Quasiparticles in Superfluid $$^3$$ 3 He with a ‘Vibrating-Wire Like’ MEMS Device

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Probing Bogoliubov Quasiparticles in Superfluid $$^3$$ 3 He with a ‘Vibrating-Wire Like’ MEMS Device. / Defoort, M.; Dufresnes, S.; Ahlstrom, S. L. et al.
In: Journal of Low Temperature Physics, Vol. 183, No. 3, 05.2016, p. 284-291.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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@article{c40120671a6b4e6f807c9dc3d2c723ff,

title = "Probing Bogoliubov Quasiparticles in Superfluid $$^3$$ 3 He with a {\textquoteleft}Vibrating-Wire Like{\textquoteright} MEMS Device",

abstract = "We have measured the interaction between superfluid 3He–B and a micro-machined goalpost-shaped device at temperatures below 0.2Tc. The measured damping follows well the theory developed for vibrating wires, in which the Andreev reflection of quasiparticles in the flow field around the moving structure leads to a nonlinear frictional force. At low velocities, the damping force is proportional to velocity, while it tends to saturate for larger excitations. Above a velocity of 2.6 mm s−1, the damping abruptly increases, which is interpreted in terms of Cooper-pair breaking. Interestingly, this critical velocity is significantly lower than that reported with other mechanical probes immersed in superfluid 3He. Furthermore, we report on a nonlinear resonance shape for large motion amplitudes that we interpret as an inertial effect due to quasiparticle friction, but other mechanisms could possibly be invoked as well.",

author = "M. Defoort and S. Dufresnes and Ahlstrom, {S. L.} and Bradley, {D. I.} and Haley, {R. P.} and Gu{\'e}nault, {A. M.} and Guise, {E. A.} and Pickett, {G. R.} and M. Poole and Woods, {A. J.} and V. Tsepelin and Fisher, {S. N.} and H. Godfrin and E. Collin",

note = "The final publication is available at Springer via http://dx.doi.org/10.1007/s10909-015-1392-9",

year = "2016",

month = may,

doi = "10.1007/s10909-015-1392-9",

language = "English",

volume = "183",

pages = "284--291",

journal = "Journal of Low Temperature Physics",

issn = "0022-2291",

publisher = "SPRINGER/PLENUM PUBLISHERS",

number = "3",

}

RIS

TY - JOUR

T1 - Probing Bogoliubov Quasiparticles in Superfluid $$^3$$ 3 He with a ‘Vibrating-Wire Like’ MEMS Device

AU - Defoort, M.

AU - Dufresnes, S.

AU - Ahlstrom, S. L.

AU - Bradley, D. I.

AU - Haley, R. P.

AU - Guénault, A. M.

AU - Guise, E. A.

AU - Pickett, G. R.

AU - Poole, M.

AU - Woods, A. J.

AU - Tsepelin, V.

AU - Fisher, S. N.

AU - Godfrin, H.

AU - Collin, E.

N1 - The final publication is available at Springer via http://dx.doi.org/10.1007/s10909-015-1392-9

PY - 2016/5

Y1 - 2016/5

N2 - We have measured the interaction between superfluid 3He–B and a micro-machined goalpost-shaped device at temperatures below 0.2Tc. The measured damping follows well the theory developed for vibrating wires, in which the Andreev reflection of quasiparticles in the flow field around the moving structure leads to a nonlinear frictional force. At low velocities, the damping force is proportional to velocity, while it tends to saturate for larger excitations. Above a velocity of 2.6 mm s−1, the damping abruptly increases, which is interpreted in terms of Cooper-pair breaking. Interestingly, this critical velocity is significantly lower than that reported with other mechanical probes immersed in superfluid 3He. Furthermore, we report on a nonlinear resonance shape for large motion amplitudes that we interpret as an inertial effect due to quasiparticle friction, but other mechanisms could possibly be invoked as well.

AB - We have measured the interaction between superfluid 3He–B and a micro-machined goalpost-shaped device at temperatures below 0.2Tc. The measured damping follows well the theory developed for vibrating wires, in which the Andreev reflection of quasiparticles in the flow field around the moving structure leads to a nonlinear frictional force. At low velocities, the damping force is proportional to velocity, while it tends to saturate for larger excitations. Above a velocity of 2.6 mm s−1, the damping abruptly increases, which is interpreted in terms of Cooper-pair breaking. Interestingly, this critical velocity is significantly lower than that reported with other mechanical probes immersed in superfluid 3He. Furthermore, we report on a nonlinear resonance shape for large motion amplitudes that we interpret as an inertial effect due to quasiparticle friction, but other mechanisms could possibly be invoked as well.

U2 - 10.1007/s10909-015-1392-9

DO - 10.1007/s10909-015-1392-9

M3 - Journal article

VL - 183

SP - 284

EP - 291

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

SN - 0022-2291

IS - 3

ER -

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