Phase slippage in thin superfluid films

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Journal of Low Temperature Physics; (United States)

DOI:https://doi.org/10.1007/BF00122559· OSTI ID:7246393

Bowley, R M; Kirk, A; King, P J ^[1]

---

1. Univ. of Nottingham (United Kingdom)

The authors extend the Ambegaokar, Halperin, Nelson and Siggia theory of vortex de-pairing in two-dimensional superfluids to describe how the current of free vortices varies with superfluid velocity, in the steady state, for temperatures just above the Kosterlitz-Thouless transition. To do so, they solve exactly the Fokker-Planck equation that describes the current of vortices produced at one edge of the film. They are able to calculate how a persistent current decays, and the thermal resistance of a film as a function of heater power. Superconducting films are considered as a charged, two-dimensional superfluid, and the theory is applied to them.

• OSTI ID: 7246393
• Journal Information: Journal of Low Temperature Physics; (United States), Journal Name: Journal of Low Temperature Physics; (United States) Vol. 88:1-2; ISSN 0022-2291; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

665420* -- Superfluidity-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DIFFERENTIAL EQUATIONS
EQUATIONS
FILMS
FLUID FLOW
FOKKER-PLANCK EQUATION
PARTIAL DIFFERENTIAL EQUATIONS
STEADY-STATE CONDITIONS
SUPERFLUIDITY
THIN FILMS
VELOCITY
VORTEX FLOW