Abstract
Longitudinal sound-wave propagation has been studied in an aerogel-liquid 4He system for various porosities of aerogel. The superfluid transition was identified as the absorption peak, whose magnitude was suppressed by aerogel. The sound velocity was analyzed within a hydrodynamic theory in both normal and superfluid phases. The absorption peak due to phonon-roton interaction around 1 K was not observed even with the most porous aerogel. The low-temperature sound velocity and attenuation show that direct collisions of phonons with aerogel strands play an important role in the acoustic properties.
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References
G. K. S. Wong, P. A. Crowell, H. A. Cho, and J. D. Reppy, Phys. Rev. Lett. 65, 2410 (1990).
J. Yoon, D. Sergatskov, J. Ma, et al., Phys. Rev. Lett. 80, 1461 (1998).
I. M. Khalatnikov, An Introduction to the Theory of Superfluidity (Nauka, Moscow, 1965; Addison-Wesley, Redwood City, 1988).
J. R. Beamish, A. Hikata, and C. Elbaum, Phys. Rev. B 27, 5848 (1983).
K. Warner and J. R. Beamish, Phys. Rev. B 50, 15896 (1994).
M. A. Biot, J. Acoust. Soc. Am. 28, 168 (1956); J. Acoust. Soc. Am. 28, 179 (1956).
M. A. Biot, J. Appl. Phys. 33, 1482 (1962).
M. A. Biot, J. Acoust. Soc. Am. 34, 1254 (1962).
M. A. Biot and D. G. Willis, J. Appl. Mech. 24, 594 (1957).
J. Gross, J. Fricke, and L. W. Hrubesh, J. Acoust. Soc. Am. 91, 2004 (1992).
M. J. McKenna, T. Slawecki, and J. D. Maynard, Physica B (Amsterdam) 165–166, 581 (1990).
M. J. McKenna, T. Slawecki, and J. D. Maynard, Phys. Rev. Lett. 66, 1878 (1991); Their early work is reported as K. L. Warner and J. R. Beamish, Phys. Rev. B 36, 5698 (1987).
K. Matsumoto, O. Arai, Y. Okuda, and K. Tajiri, Physica B (Amsterdam) 284–288, 101 (2000); K. Matsumoto, T. Higaki, Y. Matsuyamaa, and K. Tajiri, Physica B (Amsterdam) 329–333, 335 (2003).
D. L. Johnson, Appl. Phys. Lett. 37, 1065 (1980).
T. Buishvili, Sh. Kekutia, O. Tkeshelashvili, and L. Tkeshelashvili, Phys. Lett. A 300, 672 (2002).
Sh. Kekutia and N. D. Chkhaidze, Low Temp. Phys. 28, 795 (2002).
D. Tayurskii and K. Matsumoto, Solids Electron. J. 6, 213 (2004); http://mrsej.ksu.ru.
Y. Xie and J. R. Beamish, Phys. Rev. B 57, 3406 (1998).
D. R. Daughton, J. MacDonald, and N. Mulders, Physica B (Amsterdam) (in press).
P. Brusov, J. M. Parpia, P. Brusov, and G. Lawes, Phys. Rev. B 63, 140507 (2001).
T. Ichikawa, M. Yamamoto, S. Higashitani, and K. Nagai, J. Phys. Soc. Jpn. 70, 3483 (2001).
G. O. Harding and J. Wilks, Proc. R. Soc. London, Ser. A 268, 424 (1962).
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From Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 80, No. 2, 2004, pp. 118–123.
Original English Text Copyright © 2004 by Matsumoto, Matsuyama, Tayurskii, Tajiri.
This article was submitted by the authors in English.