Spin dynamics of superfluid /sup 3/He-B in a slab geometry

Journal Article · Sat Apr 01 04:00:00 EST 1989 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00688743· OSTI ID:5851363

Ishikawa, O; Sasaki, Y; Mizusaki, T; Hirai, A; Tsubota, M

The spin dynamics and the spin relaxation mechanisms of the superfluid /sup 3/He-B were studied by using the NMR method in a slab geometry, where the superfluid /sup 3/He-B was confined between narrow parallel plates with a gap smaller than the healing length of the /cflx n/-texture and the magnetic field was applied and to the plates. The relaxation parameter in the Leggett-Takagi (LT) equations was determined from a line width measurement of the transverse CW NMR. By using the pulsed NMR method, spin dynamics were studied in the nonlinear region. The observed spin dynamics were in good agreement with a numerical calculation of the LT equations together with the relaxation parameter determined by the CW NMR. When the tipping angle became larger than a certain critical value, the superfluid /sup 3/He-B entered the Brinkman-Smith (BS) state. In this case, they observed the slow relaxation process in the BS state and then the rapid recovery process from the BS state to the initial non-Leggett configuration. The slow process in the BS state was attributed to the surface relaxation mechanism due to the torque from the surface-field energy.

• Research Organization: Kyoto Univ. (Japan)
• OSTI ID: 5851363
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Journal Issue: 1-2 Vol. 75:1-2; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
656002 -- Condensed Matter Physics-- General Techniques in Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANGULAR MOMENTUM
DYNAMICS
ENERGY
EVEN-ODD NUCLEI
FREE ENERGY
HELIUM 3
HELIUM 3 B
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
LINE WIDTHS
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETIC RESONANCE
MAGNETIC SUSCEPTIBILITY
MATHEMATICAL MODELS
MECHANICS
NMR SPECTRA
NONLINEAR PROBLEMS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ORDER PARAMETERS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
RELAXATION
RELAXATION TIME
RESONANCE
SLABS
SPECTRA
SPIN
SPIN-SPIN RELAXATION
STABLE ISOTOPES
SUPERFLUIDITY
SURFACE ENERGY
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
TEXTURE
THERMODYNAMIC PROPERTIES
TORQUE