Abstract
We measured the complex transverse acoustic impedance in both superfluid 3He A1 and A2 phases. This impedance is sensitive to surface states. In our preliminary results, the temperature dependence of the impedance in the A1 phase is similar to that in A phase, and the imaginary part shows an anomaly in the A2 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.
Similar content being viewed by others
References
L.J. Buchholtz, G. Zwicknagl, Phys. Rev. B 23, 5788 (1981)
J. Hara, K. Nagai, Prog. Theor. Phys. 76, 1237 (1986)
W. Zhang, Phys. Lett. A 130, 314 (1988)
Y. Nagato, M. Yamamoto, K. Nagai, J. Low Temp. Phys. 110, 1135 (1998)
A.B. Vorontsov, J.A. Sauls, Phys. Rev. B 68, 064508 (2003)
Y. Nagato, M. Yamamoto, S. Higashitani, K. Nagai, J. Low Temp. Phys. 149, 294 (2007)
K. Nagai, Y. Nagato, M. Yamamoto, S. Higashitani, J. Phys. Soc. Jpn. 77, 111003 (2008)
T. Löfwander, V.S. Shumeiko, G. Wendin, Supercond. Sci. Technol. 14, R53 (2001)
S. Kashiwaya, Y. Tanaka, Rep. Prog. Phys. 63, 1641 (2000)
Y. Aoki, Y. Wada, M. Saitoh, R. Nomura, Y. Okuda, Y. Nagato, M. Yamamoto, S. Higashitani, K. Nagai, Phys. Rev. Lett. 95, 075301 (2005)
M. Saitoh, Y. Wada, Y. Aoki, S. Murakawa, R. Nomura, Y. Okuda, Phys. Rev. B 74, 220505 (2006)
Y. Wada, S. Murakawa, Y. Tamura, M. Saitoh, Y. Aoki, R. Nomura, Y. Okuda, Phys. Rev. B 78, 214516 (2008)
S. Murakawa, Y. Tamura, Y. Wada, M. Wasai, M. Saitoh, Y. Aoki, R. Nomura, Y. Okuda, Y. Nagato, M. Yamamoto, S. Higashitani, K. Nagai, Phys. Rev. Lett. (2009, to be published)
S. Kalbfeld, D.M. Kucera, J.B. Ketterson, Phys. Rev. Lett. 71, 2264 (1993)
S. Kalbfeld, D.M. Kucera, J.B. Ketterson, J. Low Temp. Phys. 98, 549 (1995)
Y. Lee, T.M. Haard, W.P. Halperin, J.A. Sauls, Nature 400, 431 (1999)
Y. Aoki, Y. Wada, A. Ogino, M. Saitoh, R. Nomura, Y. Okuda, J. Low Temp. Phys. 138, 783 (2005)
Y. Aoki, Y. Wada, M. Saitoh, R. Nomura, Y. Okuda, J. Phys. Chem. Solids 66, 1349 (2005)
W.P. Halperin, E. Varoquaux, in Helium Three, ed. by W.P. Halperin, L.P. Pitaevskii. Modern Problems in Condensed Matter Sciences, vol. 26 (North-Holland, Amsterdam, 1990), p. 353
N. Schopohl, W. Marquardt, L. Tewordt, J. Low Temp. Phys. 59, 469 (1985)
P.G.N. de Vegvar, R. Movshovich, E.L. Ziercher, D.M. Lee, Phys. Rev. B 57, 1028 (1986)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Murakawa, S., Yamaguchi, A., Arai, M. et al. Transverse Acoustic Impedance Measurements for Surface States of Superfluid 3He A1 and A2 Phases. J Low Temp Phys 158, 141–146 (2010). https://doi.org/10.1007/s10909-009-0008-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10909-009-0008-7