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Microkelvin thermometry with Bose-Einstein condensates of magnons and applications to studies of the AB interface in superfluid He

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

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Microkelvin thermometry with Bose-Einstein condensates of magnons and applications to studies of the AB interface in superfluid He. / Heikkinen, P. J.; Autti, S.; Eltsov, V. B. et al.
In: Journal of Low Temperature Physics, Vol. 175, No. 5-6, 06.2014, p. 681-705.

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

Harvard

Heikkinen, PJ, Autti, S, Eltsov, VB, Haley, RP & Zavjalov, VV 2014, 'Microkelvin thermometry with Bose-Einstein condensates of magnons and applications to studies of the AB interface in superfluid He', Journal of Low Temperature Physics, vol. 175, no. 5-6, pp. 681-705. https://doi.org/10.1007/s10909-014-1173-x

APA

Heikkinen, P. J., Autti, S., Eltsov, V. B., Haley, R. P., & Zavjalov, V. V. (2014). Microkelvin thermometry with Bose-Einstein condensates of magnons and applications to studies of the AB interface in superfluid He. Journal of Low Temperature Physics, 175(5-6), 681-705. https://doi.org/10.1007/s10909-014-1173-x

Vancouver

Heikkinen PJ, Autti S, Eltsov VB, Haley RP, Zavjalov VV. Microkelvin thermometry with Bose-Einstein condensates of magnons and applications to studies of the AB interface in superfluid He. Journal of Low Temperature Physics. 2014 Jun;175(5-6):681-705. doi: 10.1007/s10909-014-1173-x

Author

Heikkinen, P. J. ; Autti, S. ; Eltsov, V. B. et al. / Microkelvin thermometry with Bose-Einstein condensates of magnons and applications to studies of the AB interface in superfluid He. In: Journal of Low Temperature Physics. 2014 ; Vol. 175, No. 5-6. pp. 681-705.

Bibtex

@article{28e12154991b4268890e5dbf800237e5,
title = "Microkelvin thermometry with Bose-Einstein condensates of magnons and applications to studies of the AB interface in superfluid He",
abstract = "Coherent precession of trapped Bose-Einstein condensates of magnons is a sensitive probe for magnetic relaxation processes in superfluid He-B down to the lowest achievable temperatures. We use the dependence of the relaxation rate on the density of thermal quasiparticles to implement thermometry in He-B at temperatures below K. Unlike popular vibrating wire or quartz tuning fork based thermometers, magnon condensates allow for contactless temperature measurement and make possible an independent in situ determination of the residual zero-temperature relaxation provided by the radiation damping. We use this magnon-condensate-based thermometry to study the thermal impedance of the interface between A and B phases of superfluid He. The magnon condensate is also a sensitive probe of the orbital order-parameter texture. This has allowed us to observe for the first time the non-thermal signature of the annihilation of two AB interfaces.",
keywords = "Superfluid He-3, Magnons, BEC, Coherent spin precession, Spin diffusion, Thermometry, Quasiparticle impedance, AB interface, B PHASE-BOUNDARY, MAGNETIC-FIELD, SPIN-DIFFUSION, HYDROSTATIC THEORY, VIBRATING-WIRE, HE-3-B, TEXTURES, VORTEX, NMR, TEMPERATURE",
author = "Heikkinen, {P. J.} and S. Autti and Eltsov, {V. B.} and Haley, {R. P.} and Zavjalov, {V. V.}",
year = "2014",
month = jun,
doi = "10.1007/s10909-014-1173-x",
language = "English",
volume = "175",
pages = "681--705",
journal = "Journal of Low Temperature Physics",
issn = "0022-2291",
publisher = "SPRINGER/PLENUM PUBLISHERS",
number = "5-6",

}

RIS

TY - JOUR

T1 - Microkelvin thermometry with Bose-Einstein condensates of magnons and applications to studies of the AB interface in superfluid He

AU - Heikkinen, P. J.

AU - Autti, S.

AU - Eltsov, V. B.

AU - Haley, R. P.

AU - Zavjalov, V. V.

PY - 2014/6

Y1 - 2014/6

N2 - Coherent precession of trapped Bose-Einstein condensates of magnons is a sensitive probe for magnetic relaxation processes in superfluid He-B down to the lowest achievable temperatures. We use the dependence of the relaxation rate on the density of thermal quasiparticles to implement thermometry in He-B at temperatures below K. Unlike popular vibrating wire or quartz tuning fork based thermometers, magnon condensates allow for contactless temperature measurement and make possible an independent in situ determination of the residual zero-temperature relaxation provided by the radiation damping. We use this magnon-condensate-based thermometry to study the thermal impedance of the interface between A and B phases of superfluid He. The magnon condensate is also a sensitive probe of the orbital order-parameter texture. This has allowed us to observe for the first time the non-thermal signature of the annihilation of two AB interfaces.

AB - Coherent precession of trapped Bose-Einstein condensates of magnons is a sensitive probe for magnetic relaxation processes in superfluid He-B down to the lowest achievable temperatures. We use the dependence of the relaxation rate on the density of thermal quasiparticles to implement thermometry in He-B at temperatures below K. Unlike popular vibrating wire or quartz tuning fork based thermometers, magnon condensates allow for contactless temperature measurement and make possible an independent in situ determination of the residual zero-temperature relaxation provided by the radiation damping. We use this magnon-condensate-based thermometry to study the thermal impedance of the interface between A and B phases of superfluid He. The magnon condensate is also a sensitive probe of the orbital order-parameter texture. This has allowed us to observe for the first time the non-thermal signature of the annihilation of two AB interfaces.

KW - Superfluid He-3

KW - Magnons

KW - BEC

KW - Coherent spin precession

KW - Spin diffusion

KW - Thermometry

KW - Quasiparticle impedance

KW - AB interface

KW - B PHASE-BOUNDARY

KW - MAGNETIC-FIELD

KW - SPIN-DIFFUSION

KW - HYDROSTATIC THEORY

KW - VIBRATING-WIRE

KW - HE-3-B

KW - TEXTURES

KW - VORTEX

KW - NMR

KW - TEMPERATURE

U2 - 10.1007/s10909-014-1173-x

DO - 10.1007/s10909-014-1173-x

M3 - Journal article

VL - 175

SP - 681

EP - 705

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

SN - 0022-2291

IS - 5-6

ER -