Longitudinal Acoustic Impedance and the Squashing Mode in Superfluid He3-B Academic Article uri icon

abstract

  • We have observed an unexpectedly strong effect of the squashing mode in He3-B on the longitudinal acoustic impedance Z. Most peculiar is the behavior of the reactive part Z which displays both large positive and negative excursions. Our analysis illustrates the role of the boundary conditions on the superfluid order parameter and of the crossover with temperature of the squashing mode from a propagating wave with velocity csq (which is measured) to a nonpropagating surface wave (whose imaginary velocity accounts for the anomalies of Z). 1981 The American Physical Society.

published proceedings

  • Physical Review Letters

author list (cited authors)

  • Avenel, O., Piche, L., Saslow, W. M., Varoquaux, E., & Combescot, R.

citation count

  • 18

complete list of authors

  • Avenel, O||Piche, L||Saslow, WM||Varoquaux, E||Combescot, R

publication date

  • September 1981