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Interfacial energy of the superfluid He-3 A-B phase interface in the zero-temperature limit.

Research output: Contribution to journalJournal article

Published

Journal publication date23/07/2004
JournalPhysical Review Letters
Journal number4
Volume93
Number of pages0
Pages046301
Original languageEnglish

Abstract

We have measured the surface energy of the interface between the A and B phases of superfluid He-3 in the low temperature limit at zero pressure. Using a shaped magnetic field, we control the passage of the phase boundary through a small aperture. We obtain the interphase surface energy from the over- or undermagnetization required to force the interface through the aperture in both directions, yielding values of the surface tension and the interfacial contact angle. This is the first measurement of the interfacial energy in high magnetic fields and in the zero-temperature limit.