CMT57

Faraday effect for transverse waves in superfluid ³He-B

• Author(s): G. F. Moores and J. A. Sauls
• Address: Department of Physics & Astronomy, Northwestern University, Evanston, IL 60208
• Date: February 2, 1994
• Journal: Physica B: Cond. Matt. 194, 1595-1596 [DOI]
• Abstract:
  Low-frequency (ω ≪ Δ(T)) transverse sound in superfluid ³He becomes overdamped at temperatures near T_c. However, at low temperatures (T ≲ 0.3 T_c) the off-resonant coupling to the J = 2^-, M = ± 1 modes stabilizes a propagating transverse current mode with a large phase velocity and low damping for frequencies above that of the J = 2^- mode. A magnetic field with H || q lifts the degeneracy of right- and left-circularly polarized waves giving rise to the analog of circular dichroism and birefringence of electromagnetic waves. These features suggest that transverse waves may be more easily detected in the B-phase than in normal3He. Below we give a brief summary of results on transverse waves in ³He-B.

• Comment: 2 pages, 2 figures

• Eprint: [PDF]

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