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New sound mode in superfluid He-4 film adsorbed on atomically flat substrate

Published under licence by IOP Publishing Ltd
, , Citation Tomoki Minoguchi 2009 J. Phys.: Conf. Ser. 150 032060 DOI 10.1088/1742-6596/150/3/032060

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1 Institute of Physics, University of Tokyo, Komaba 3–8–1, Meguro, Tokyo 153–8902, Japan

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1742-6596/150/3/032060

Abstract

New sound mode in superfluid He-4 layer adsorbed on graphite surface is theoretically proposed. A dislocation dynamics, which arises in a solid bilayer underlying the superfluid is explicitly considered. The result is compared with recent QCM experiment on Grafoil.

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10.1088/1742-6596/150/3/032060