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Coherent spin precession in superfluid He-3-B excited in a field minimum at low temperatures.

Research output: Contribution to journalJournal article

Published

Journal publication date02/2005
JournalJournal of Low Temperature Physics
Journal number3-4
Volume138
Number of pages6
Pages777-782
Original languageEnglish

Abstract

The persistent precessing domain (PPD) is an isolated region of coherent spin precession which is observed in the B phase of superfluid He-3 at the lowest achievable temperatures. It has many unusual properties and its free decay can exceed 1000 s at the lowest temperatures. Previous observations of the PPD were highly irreproducible but we now find the PPD to be very reproducible when there is a field minimum along the cell axis. Here we discuss measurements of the PPD as we control the magnetic field profile, allowing the depth of the minimum to be adjusted.