Gyromagnetism of Cooper pairs in superfluid /sup 3/He-B

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

OSTI ID:5951177

Volovik, G E; Mineev, V P

The Einstein--de Haas gyromagnetic effect in /sup 3/He--B is analyzed. In a magnetic field, /sup 3/He-B acquires an orbital angular momentum comparable in magnitude to the spin but rotated from it by the matrix R/sub alpha,i/, which is an order parameter in /sup 3/He-B. Only a negligibly small part of the orbital angular momentum stems from the local rotational motion of Cooper pairs; most of it comes from a current flowing along the surface. This orbital angular momentum could be observed in an NMR experiment in a rotating apparatus, where it should make the orientation of the order parameter dependent on the rotation direction. The orientational effect would be negligibly small in large vessels, since it is due to a local gyromagnetism. It is suggested that the orbital angular momentum instead be measured in thin capillaries, where the orientational effect stems from a surface gyromagnetism, which is amenable to measurement.

• Research Organization: L. D. Landau Institute of Theoretical Physics, Academy of Sciences of the USSR
• OSTI ID: 5951177
• Journal Information: Sov. Phys. - JETP (Engl. Transl.); (United States), Journal Name: Sov. Phys. - JETP (Engl. Transl.); (United States) Vol. 59:5; ISSN SPHJA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANGULAR MOMENTUM
COOPER PAIRS
EVEN-ODD NUCLEI
HELIUM 3
HELIUM 3 B
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MAGNETIZATION
MOTION
NUCLEI
ORBITAL ANGULAR MOMENTUM
ORDER PARAMETERS
ORIENTATION
ROTATION
STABLE ISOTOPES