title: Spin precession waves in superfluid 3He-B.
abstract: Spin precession waves of homogeneously precessing domains (HPD) in superfluid 3He-B have been studied at 11 bars and temperatures down to 0.45T(c). The waves were excited by an alternating longitudinal magnetic field with an axial symmetry, applied as a small perturbation ranging from 1 nT up to a few micro T. When the spin precession wave is excited, two nuclear magnetic resonances simultaneously coexist: first, the high frequency resonance used for excitation of the HPD, and, second, the low-frequency resonance of the HPD wave mode. We report the first experimental evidence of the nonlinear behavior of low-frequency precession spin wave modes of the continuously maintained HPD.
authors.affiliation: Centre of Low Temperature Physics, Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 04353 Kosice, Slovakia.
authors.forename: E
authors.initials: E
authors.lastname: Gazo
authors.forename: M
authors.initials: M
authors.lastname: Kupka
authors.forename: M
authors.initials: M
authors.lastname: Medeová
authors.forename: P
authors.initials: P
authors.lastname: Skyba