Abstract
We report experimental observations of the phonon focusing pattern in [100] GaAs using low temperature electron beam scanning for phonon generation. The typical dispersive effects for high-frequency phonons expected from the calculations by Tamura have clearly been observed using PbIn tunnel junctions for phonon detection. The quantitative comparison of our experimental results with the frequency dependent calculations by Tamura allowed to determine the dominant phonon frequencies contributing to the detector signal in our different experiments. Above the temperature of the λ-point the dominant phonon frequencies appear to be shifted considerably to lower values, which could be explained by a heating effect in the liquid-He layer adjacent to the tunnel junction detector. By comparing the observed magnitude of the detector signal with different theoretical treatments of the detector response, we have found satisfactory agreement for a model where the perturbation due to the high-frequency phonons is restricted to the base electrode of the detector reached first by the phonons following their passage through the crystal.
Similar content being viewed by others
References
Huebener, R.P.: Advances in electronics and electron physics. Hawkes, P.W. (ed.), Vol. 70, p. 1. New York: Academic Press 1987
Huebener, R.P., Metzger, W.: Scanning electron microscopy. Vol. II, p. 617. Chicago: SEM Inc. 1985
Hurley, D.C., Wolfe, J.P.: Phys. Rev. B32, 2568 (1985)
Klein, W., Held, E., Huebener, R.P.: Z. Phys. B — Condensed Matter69, 69 (1987)
Northrop, G.A., Wolfe, J.P.: Phys. Rev. Lett.43, 1424 (1979);
Northrop, G.A., Wolfe, J.P.: Phys. Rev. B22, 6196 (1980)
Northrop, G.A., Wolfe, J.P.: Nonequilibrium phonon dynamics. Bron, W.E. (ed.), p. 165, New York: Plenum Press 1985
Eichele, R., Huebener, R.P., Seifert, H.: Z. Phys. B — Condensed Matter48, 89 (1982)
Metzger, W., Huebener, R.P.: Z. Phys. B — Condensed, Matter73, 33 (1988)
Dietsche, W., Northrop, G.A., Wolfe, J.P.: Phys Rev. Lett.47, 660 (1981)
Hebboul, S.E., Wolfe, J.P.: Phys. Rev. B34, 3948 (1986);
Hebboul, S.E., Wolfe, J.P.: Z. Phys. B — Condensed Matter73, 437 (1989)
Northrop, G.A., Hebboul, S.E., Wolfe, J.P.: Phys. Rev. Lett.55, 95 (1985);
Hebboul, S.E., Wolfe, J.P.: Z. Phys. B — Condensed Matter74, 35 (1989)
Ulbrich, R.G.: Nonequilibrium phonon dynamics. Bron, W.E. (ed.), p. 101. New York: Plenum Press 1985
Eisenmenger, W.: Physical acoustics Mason, W., Thurston, R.N. (ed.), Vol. XII, p. 80. New York: Academic Press 1976
Tamura, S., Harada, T.: Phys. Rev. B32, 5245 (1985)
Held, E., Klein, W., Huebener, R.P.: Z. Phys. B — Condensed Matter75, 17 (1989)
Kittel, H.: Thesis, University of Tuebingen 1988 (unpublished)
Trumpp, H.J., Eisenmenger, W.: Z. Phys. B — Condensed Matter28, 159 (1977);
Marx, D., Eisenmenger, W.: Z. Phys. B — Condensed Matter48, 277 (1982)
Tamura, S.: Phys. Rev. B31, 2574 (1985);
Tamura, S., Maris, H.J.: Phys. Rev. B31, 2595 (1985)
Rothwarf, A., Taylor, B.N.: Phys. Rev. Lett.19, 27 (1967)
Kaplan, S.B., Chi, C.C., Langenberg, D.N., Chang, J.J., Jafarey, S., Scalapino, D.J.: Phys. Rev. B14, 4854 (1976)
Wells, O.C.: Scanning electron microscopy. New York: McGraw Hill 1974
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kittel, H., Held, E., Klein, W. et al. Dispersive anisotropic ballistic phonon propagation in [100] GaAs. Z. Physik B - Condensed Matter 77, 79–89 (1989). https://doi.org/10.1007/BF01313623
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01313623