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Textural singularities in superfluid3He-B

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The absorption signal occasionally found missing in the middle of resonance absorption lines in NMR is explained on the basis of a textural singularity of the anisotropy axis in the B phase of3He. The singularity combines with the field gradient present to give rise to an asymmetric hole in the signal with a singularity on the high-frequency side. The line shapes and temperature dependence are predicted and agree well with experiment. Spin waves are found to be trapped by the potential well formed by the texture and the field gradient. The frequency intervals predicted for the spin waves also agree well with experiment.

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Work supported in part by National Science Foundation Grant No. NSF DMR 74-18030.

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Engelsberg, S., Brinkman, W.F. & Osheroff, D.D. Textural singularities in superfluid3He-B. J Low Temp Phys 29, 29–41 (1977).

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  • Anisotropy
  • Magnetic Material
  • Absorption Line
  • Line Shape
  • Field Gradient