Development of a 3He-hydraulic actuator for spin pump in superfluid 3He-A1

A. Yamaguchi, M. Wada, H. Tanaka, G. Motoyama, A. Sumiyama, Y. Aoki, Y. Okuda, S. Murakawa, Y. Karaki, M. Kubota, H. Kojima

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The superfluid 3He A1 phase contains a spin-polarized condensate. This property allows novel superfluid spin current experiments. In the mechano-spin effect of the A1 phase a mechanically applied pressure gradient and a superleak-spin filter enable to directly boost spin polarization of 3He in a small chamber. Using a flexible membrane as an electrostatically actuated pump, we carried out such experiments and observed 50% enhancement of spin density. Here we report on a new 3He- hydraulic actuator for achieving greater enhancement of spin density. The actuator consists of two liquid 3He chambers located at a 4.2 K plate and in the interior of the cell. The pressure in the 4.2 K chamber is heater-controlled and it transmits a force onto a membrane in the cell. The motion of the membrane induces spin-polarized current into an accumulation chamber.

Original languageEnglish
Article number012081
JournalJournal of Physics: Conference Series
Volume400
Issue numberPART 1
DOIs
Publication statusPublished - 2012

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hydraulic actuators
pumps
chambers
membranes
augmentation
acceleration (physics)
cells
pressure gradients
heaters
condensates
actuators
filters

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Yamaguchi, A., Wada, M., Tanaka, H., Motoyama, G., Sumiyama, A., Aoki, Y., ... Kojima, H. (2012). Development of a 3He-hydraulic actuator for spin pump in superfluid 3He-A1. Journal of Physics: Conference Series, 400(PART 1), [012081]. https://doi.org/10.1088/1742-6596/400/1/012081

Development of a 3He-hydraulic actuator for spin pump in superfluid 3He-A1. / Yamaguchi, A.; Wada, M.; Tanaka, H.; Motoyama, G.; Sumiyama, A.; Aoki, Y.; Okuda, Y.; Murakawa, S.; Karaki, Y.; Kubota, M.; Kojima, H.

In: Journal of Physics: Conference Series, Vol. 400, No. PART 1, 012081, 2012.

Research output: Contribution to journalArticle

Yamaguchi, A, Wada, M, Tanaka, H, Motoyama, G, Sumiyama, A, Aoki, Y, Okuda, Y, Murakawa, S, Karaki, Y, Kubota, M & Kojima, H 2012, 'Development of a 3He-hydraulic actuator for spin pump in superfluid 3He-A1', Journal of Physics: Conference Series, vol. 400, no. PART 1, 012081. https://doi.org/10.1088/1742-6596/400/1/012081
Yamaguchi, A. ; Wada, M. ; Tanaka, H. ; Motoyama, G. ; Sumiyama, A. ; Aoki, Y. ; Okuda, Y. ; Murakawa, S. ; Karaki, Y. ; Kubota, M. ; Kojima, H. / Development of a 3He-hydraulic actuator for spin pump in superfluid 3He-A1. In: Journal of Physics: Conference Series. 2012 ; Vol. 400, No. PART 1.
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AU - Aoki, Y.

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