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

Fingerprint

Acoustic impedance measurement
acoustic impedance
impedance measurement
Surface states
anomalies
impedance
Acoustic impedance
Temperature
temperature dependence
temperature

Keywords

  • Acoustic impedance
  • Superfluid He
  • Surface state

ASJC Scopus subject areas

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

Cite this

Murakawa, S., Yamaguchi, A., Arai, M., Wasai, M., Aoki, Y., Ishimoto, H., ... 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

Transverse acoustic impedance measurements for surface states of superfluid 3He A 1 and A 2 phases. / Murakawa, Satoshi; Yamaguchi, Akira; Arai, Miho; Wasai, Masahiro; Aoki, Yuki; Ishimoto, Hidehiko; Nomura, Ryuji; Okuda, Yuichi.

In: Journal of Low Temperature Physics, Vol. 158, No. 1-2, 01.2010, p. 141-146.

Research output: Contribution to journalArticle

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, vol. 158, no. 1-2, pp. 141-146. https://doi.org/10.1007/s10909-009-0008-7
Murakawa, Satoshi ; Yamaguchi, Akira ; Arai, Miho ; Wasai, Masahiro ; Aoki, Yuki ; Ishimoto, Hidehiko ; Nomura, Ryuji ; Okuda, Yuichi. / Transverse acoustic impedance measurements for surface states of superfluid 3He A 1 and A 2 phases. In: Journal of Low Temperature Physics. 2010 ; Vol. 158, No. 1-2. pp. 141-146.
@article{7740f35257d14607b6813d31d8411a4f,
title = "Transverse acoustic impedance measurements for surface states of superfluid 3He A 1 and A 2 phases",
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.",
keywords = "Acoustic impedance, Superfluid He, Surface state",
author = "Satoshi Murakawa and Akira Yamaguchi and Miho Arai and Masahiro Wasai and Yuki Aoki and Hidehiko Ishimoto and Ryuji Nomura and Yuichi Okuda",
year = "2010",
month = "1",
doi = "10.1007/s10909-009-0008-7",
language = "English",
volume = "158",
pages = "141--146",
journal = "Journal of Low Temperature Physics",
issn = "0022-2291",
publisher = "Springer New York",
number = "1-2",

}

TY - JOUR

T1 - Transverse acoustic impedance measurements for surface states of superfluid 3He A 1 and A 2 phases

AU - Murakawa, Satoshi

AU - Yamaguchi, Akira

AU - Arai, Miho

AU - Wasai, Masahiro

AU - Aoki, Yuki

AU - Ishimoto, Hidehiko

AU - Nomura, Ryuji

AU - Okuda, Yuichi

PY - 2010/1

Y1 - 2010/1

N2 - 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.

AB - 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.

KW - Acoustic impedance

KW - Superfluid He

KW - Surface state

UR - http://www.scopus.com/inward/record.url?scp=73349141373&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=73349141373&partnerID=8YFLogxK

U2 - 10.1007/s10909-009-0008-7

DO - 10.1007/s10909-009-0008-7

M3 - Article

AN - SCOPUS:73349141373

VL - 158

SP - 141

EP - 146

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

SN - 0022-2291

IS - 1-2

ER -