Abstract
Experimental study of low-frequency oscillation modes of a domain wall between the homogeneously precessing domain (HPD) and the stationary domain (SD) in superfluid 3He–B is presented. Measurements were performed in the temperature range from 0.5 T c to 0.8 T c and at a pressure of 2.7 bar. The small signal of the low-frequency domain wall oscillations on the high-frequency background (the HPD excitation) was measured using an RF-detector and a low-frequency filter in combination with a low-frequency lock-in amplifier. This technique makes it possible to study fine effects of the HPD low-frequency oscillation modes which may be associated with the influence of the texture.
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