Effect of texture on the propagation of collective modes in superfluid /sup 3/He

Journal Article · Wed Aug 01 04:00:00 EDT 1984 · Sov. Phys. - JETP (Engl. Transl.); (United States)

OSTI ID:5894978

Volovik, G E; Khazan, M V

A phenomenological theory of collective modes in superfluid /sup 3/He-B, similar to the Leggett theory for spin dynamics, is developed. The theory can be applied to study the dynamics of collective modes in an inhomogeneous texture of the order parameter. In the presence of a magnetic field, the quantization axis of the angular momentum J that characterizes the modes varies in space in this texture. This results in a Van Hove-type texture-dependent singularity in the absorption spectrum of the ultrasound that excites the collective modes. Thus, in the texture produced by a magnetic field between parallel plates and observed with the aid of ultrasound, a collective mode with J = 2 should be split not into five modes, as it should in open geometry, but into ten. The additional splitting of the mode spectrum on account of the textures can be used to investigate vortex structures in a rotating superfluid liquid.

• Research Organization: L. D. Landau Institute of Theoretical Physics
• OSTI ID: 5894978
• Journal Information: Sov. Phys. - JETP (Engl. Transl.); (United States), Journal Name: Sov. Phys. - JETP (Engl. Transl.); (United States) Vol. 60:2; ISSN SPHJA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
COLLECTIVE EXCITATIONS
ENERGY-LEVEL TRANSITIONS
EVEN-ODD NUCLEI
EXCITATION
HELIUM 3
HELIUM 3 B
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MAGNETIC FIELDS
NUCLEI
ORDER PARAMETERS
SOUND WAVES
SPECTRA
STABLE ISOTOPES
TEXTURE
ULTRASONIC WAVES