Gazo E, Kupka M, Medeová M, Skyba P
Centre of Low Temperature Physics, Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 04353 Kosice, Slovakia.
Phys Rev Lett. 2003 Aug 1;91(5):055301. doi: 10.1103/PhysRevLett.91.055301. Epub 2003 Jul 28.
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.
在11巴压力和低至0.45T(c)的温度下，对超流3He-B中均匀进动畴（HPD）的自旋进动波进行了研究。这些波由具有轴对称性的交变纵向磁场激发，该磁场作为小扰动施加，范围从1 nT到几微特斯拉。当自旋进动波被激发时，两种核磁共振同时共存：第一，用于激发HPD的高频共振；第二，HPD波模式的低频共振。我们报告了连续维持的HPD的低频进动自旋波模式非线性行为的首个实验证据。
