Superfluid flow dissipation in two dimensions

Journal Article · Fri Nov 01 04:00:00 EST 1985 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00681629· OSTI ID:6280187

Gillis, K A; Volz, S; Mochel, J M

A model is presented describing the onset of nonlinear dissipation in two-dimensional helium films for all T < T/sub KT/, where T/sub K/T is the Kosterlitz-Thouless transition temperature. The superfluid velocity is included in the renormalization equations of Kosterlitz and Thouless, and it is shown that the model predicts a characteristic velocity for a given temperature, film thickness, and frequency where onset occurs. No ''critical velocity'' is predicted except at T = 0. The model neglects the effects of pinning, and preliminary measurements seem to substantiate this assumption.

• Research Organization: Department of Physics, University of Illinois at Urbana-Champaign, and Materials Research Laboratory, Urbana, Illinois
• OSTI ID: 6280187
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 61:3; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DISSIPATION FACTOR
EVEN-EVEN NUCLEI
FILMS
FLUIDS
HELIUM 4
HELIUM II
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
NONLINEAR PROBLEMS
NUCLEI
QUANTUM FLUIDS
RENORMALIZATION
STABLE ISOTOPES
SUPERFLUIDITY
TWO-DIMENSIONAL CALCULATIONS
VELOCITY
VORTICES