Third sound and thermal conduction in thin4He films

Teitel, S.

doi:10.1007/bf00655444

Cited by 32 publications

(5 citation statements)

References 19 publications

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“…Thus, it follows that third sound propagates when < T T c for any wavenumber ≠ q 0 and for [76]. There is an excellent discussion of thermal conduction and third sound in 4 He films by Teitel [349] where he attempts to fit the thermal resistance data using parameters from the simultaneous torsional oscillator dissipation data as shown in figure 36.…”

Section: Dynamicsmentioning

confidence: 99%

Kosterlitz–Thouless physics: a review of key issues

2016

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This article reviews, from a very personal point of view, the origins and the early work on transitions driven by topological defects such as vortices in the two dimensional planar rotor model and in (4)Helium films and dislocations and disclinations in 2D crystals. I cover the early papers with David Thouless and describe the important insights but also the errors and oversights since corrected by other workers. I then describe some of the experimental verifications of the theory and some numerical simulations. Finally applications to superconducting arrays of Josephson junctions and to recent cold atom experiments are described.

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Section: Dynamicsmentioning

confidence: 99%

Kosterlitz–Thouless physics: a review of key issues

2016

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“…The inclusion of vortices in the description of third sound is due to Ambegaokar et al (1980). A thorough discussion of vortices in connection with third sound has been given by Teitel (1982).…”

Section: He Films and Third Soundmentioning

confidence: 99%

“…Ambegaokar et al (1980) have shown that the thermal conductance, when expressed in the Couloumb gas analogy, should be inversely proportional to the density of free Coulomb gas charges n F . Teitel (1982) gives a detailed discussion. Since the thermal conductance is inversely proportional to the density of free Coulomb gas charges, it should reflect the Kosterlitz-Thouless transition through a rapid decrease with increasing Coulomb gas temperature T CG~T /p.…”

Section: Thermal Conductancementioning

confidence: 99%

The two-dimensional Coulomb gas, vortex unbinding, and superfluid-superconducting films

1987

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The article reviews the two-dimensional Coulomb gas model and its connection to vortex fluctuations for a two-dimensional superfluid. The neutral and non-neutral versions of the Coulomb gas are discussed and the relation to an equivalent sine-Gordon field theory is given. The charge-unbinding picture is used to elucidate some essential properties of the Coulomb gas. Derivations of approximate renormalization equations are sketched and the phase transition for the neutral two-dimensional Coulomb gas is described. The Kosterlitz renormalization-group equations are reviewed in some detail. The vortex-Coulomb gas charge analogy is carefully explained. The connections between experiments for 4 He films and superconducting films and the neutral and non-neutral versions of the Coulomb gas are outlined using concepts like the universal jump and the Coulomb gas scaling relations. The properties of a dynamical version of the Coulomb gas, corresponding to vortex dynamics, are discussed and related to experiments. An analogy with Maxwell's equations in two dimensions is also given. ( |r, -Tj | ), with the interaction U defined by U( r)= fd 2 r'd 2 r"f rQ { | r-r' | )V K ( | r' >/r 0 (r"> (2.4) Rev. Mod.

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“…Prior to writing down the equations for these variables, we mention that the behavior of the system depends on intensity of heat removal into the substrate, rate of evaporation of atoms from the film surface and vortex formation effects. It turns out that presence of vortices leads only to renormalization of third sound speed [15,16,17] and their effect on the electric field caused by the third sound wave is weak even in the vicinity of the superfluid transition. Therefore we neglect the possibility of vortex formation in the system.…”

Section: Polarization Of a Superfluid Helium Filmmentioning

confidence: 99%

Non-stationary Thermal Electromotive Force Generated by Third Sound

Shevchenko

Konstantinov

2018

J Low Temp Phys

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It is predicted that oscillations of temperature during propagation of third sound in a thin superfluid film cause appearance of an alternating electric field in the surrounding space (a peculiar non-stationary thermoelectric effect). The magnitude of this field depends significantly on the substrate type and the method of its coating. It is shown that the differential thermal EMF (the ratio of electric potential amplitude to the film temperature amplitude) can exceed such one in metals and reach 10 −4 V/K.

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Third sound and thermal conduction in thin4He films

Cited by 32 publications

References 19 publications

Kosterlitz–Thouless physics: a review of key issues

Kosterlitz–Thouless physics: a review of key issues

The two-dimensional Coulomb gas, vortex unbinding, and superfluid-superconducting films

Non-stationary Thermal Electromotive Force Generated by Third Sound

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