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Spin dynamics at the dipole unlocking transition in HE-3-A.

Research output: Contribution to journalJournal article

Published

Journal publication date10/1995
JournalJournal of Low Temperature Physics
Journal number1-2
Volume101
Number of pages6
Pages117-122
Original languageEnglish

Abstract

The equations describing the spin dynamics of He-3-A have been generalised to allow for the effect of susceptibility anisotropy on the Leggett-Takagi damping. Analytical and numerical solutions have been obtained for the configuration where 1 is locked parallel to a static magnetic field by boundaries. Our investigations show that the dipole unlocking transition, where d flips from parallel to perpendicular to 1, should proceed via a long lived spin precession at a frequency (omega(L) + omega(LD)), where omega(L) is the Larmor frequency and omega(LD) the Larmor frequency at the dipole unlocking field. Progress in searching for this mode experimentally is reported.