Author(s): J. A. Sauls, Y. Lee, T. M. Haard, W. P. Halperin
Comments: Proceedings of the 22nd International Conference on
Low Temperature Physics, Helsinki, Finland;
2 pages with 1 figure
Journal-ref:
Physica B 284-288, 267 (2000)
[DOI]
Abstract:
In superfluid 3He-B, the off-resonant coupling of the J=2-, M =+/- 1 order parameter
collective modes to transverse current excitations stabilizes propagating transverse waves with low damping
for frequencies above that of the J=2- modes. Right- (RCP) and left circularly polarized (LCP)
transverse modes are degenerate in zero field; however, a magnetic field with H || q lifts this degeneracy
giving rise to the acoustic analog of circular birefringence and an acoustic Faraday effect for linearly
polarized transverse sound waves. We present theoretical results for the temperature, pressure and field
dependence of the Faraday rotation angle, and compare the theory with recent measurements.
The analysis provides a direct measurement of the Lande' g-factor for the J=2- modes,
and new information on the magnitude of f-wave pairing correlations in 3He-B.
