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Persistent coherent spin precession in superfluid He-3-B driven by off-resonant excitation

Research output: Contribution to journalJournal article

Published

Journal publication date31/05/1999
JournalPhysical review letters
Journal number22
Volume82
Number of pages4
Pages4484-4487
Original languageEnglish

Abstract

In superfluid He-3-B under conditions of negligible normal fluid density we are able to trap a domain of coherent spin precession away from the destructive influence of boundaries. After the domain is generated by an NMR pulse, the free spin precession may continue for several minutes. Remarkably, we find that these precessing domains may also be generated by cw excitation but only at a frequency considerably higher than that of the precession. We believe that this behavior may indicate that at our temperatures the precessing spin is able to stimulate the orbital moment into sympathetic precession. [S0031-9007(99)09224-8].