Finite-frequency nonlinear effects in the dynamics of superfluid /sup 4/He films

Journal Article · Mon Feb 01 04:00:00 EST 1982 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.25.1610· OSTI ID:5651000

Yu, L

A theoretical scheme is proposed to study the nonlinear effects of a finite-frequency external driving field on the vortex pairs in helium films on the basis of the Kosterlitz-Thouless theory. The screening effect due to free vortices is considered self-consistently in the Debye-Hueckel approximation. The finite-amplitude phenomena observed in Bishop and Reppy's torsional oscillator experiments (Phys. Rev. B 22, 5171 (1980)) are interpreted in terms of the extra dissipation due to free vortices generated in the external field of finite frequency.

• Research Organization: Lyman Laboratory of Physics, Harvard University, Cambridge, Massachusetts 02138
• OSTI ID: 5651000
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 25:3; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
EVEN-EVEN NUCLEI
FILMS
FLUIDS
HELIUM 4
HELIUM II
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
NONLINEAR PROBLEMS
NUCLEI
PHASE TRANSFORMATIONS
QUANTUM FLUIDS
RELAXATION
SCREENING
SELF-CONSISTENT FIELD
STABLE ISOTOPES
SUPERFLUIDITY
VORTICES