Phys. Rev. Lett. 77, 1314–1317 (1996)Nonlinear Spin Dynamics and Magnetic Field Distortion of the Superfluid 3He-B Order ParameterReceived 2 February 1996; published in the issue dated 12 August 1996 We have measured magnetic field distortion of the order parameter and the longitudinal resonance frequency of superfluid 3He-B using pulsed nuclear magnetic resonance. The experiments were guided by numerical solutions of Leggett's equations which we have generalized to include gap distortion. We have found stable regions for the nonlinear spin dynamics and taken advantage of this to obtain the first measurements of the temperature dependence of the distortion of the energy gap in the B phase. At low temperatures and pressures the results agree with theoretical predictions of Fishman and Sauls. © 1996 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.77.1314
DOI:
10.1103/PhysRevLett.77.1314
PACS:
67.57.Lm, 76.60.Jx
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