Transverse acoustic impedance measurements for surface states of superfluid 3He A 1 and A 2 phases

Satoshi Murakawa, Akira Yamaguchi, Miho Arai, Masahiro Wasai, Yuki Aoki, Hidehiko Ishimoto, Ryuji Nomura, Yuichi Okuda

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We measured the complex transverse acoustic impedance in both superfluid 3He A 1 and A 2 phases. This impedance is sensitive to surface states. In our preliminary results, the temperature dependence of the impedance in the A 1 phase is similar to that in A phase, and the imaginary part shows an anomaly in the A 2 phase. These anomalies occurred at the temperature defined as T k, which is lower as the frequency gets higher. The similar frequency dependence of T k in each phase suggests that the anomaly is attributed to the same origin. The frequency dependence of the T k /T c indicates that the shape of the surface density of each spin pair state did not greatly change in the present experimental temperature range.

Original languageEnglish
Pages (from-to)141-146
Number of pages6
JournalJournal of Low Temperature Physics
Volume158
Issue number1-2
DOIs
Publication statusPublished - 2010 Jan
Externally publishedYes

Keywords

  • Acoustic impedance
  • Superfluid He
  • Surface state

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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    Murakawa, S., Yamaguchi, A., Arai, M., Wasai, M., Aoki, Y., Ishimoto, H., Nomura, R., & Okuda, Y. (2010). Transverse acoustic impedance measurements for surface states of superfluid 3He A 1 and A 2 phases. Journal of Low Temperature Physics, 158(1-2), 141-146. https://doi.org/10.1007/s10909-009-0008-7