Ripplons,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">He</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>3</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>, and Heat Conduction on the Surface of Superfluid<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">He</mml:mi

Mantz, I. B.; Edwards, D. O.; Nayak, Vikas

doi:10.1103/physrevlett.44.1094.2

Cited by 2 publications

(3 citation statements)

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“…Generally speaking the experimental observation of the ripplon-phonon interaction is a separate and quite 1) safonov@isssph.kiae.ru formidable problem. One of possible solutions is to measure the heat transfer along the helium surface [4]. However, in this case, one has to use thin films to avoid a giant-effective thermal conductance of a bulk liquid, which could easily mask the surface heat transfer.…”

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confidence: 99%

Low-Temperature Mobility of Surface Electrons and Ripplon-Phonon Interaction in Liquid Helium

Safonov,

Safonova,

Demukh

2010

Preprint

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The low-temperature dc mobility of the two-dimensional electron system localized above the surface of superfluid helium is determined by the slowest stage of the longitudinal momentum transfer to the bulk liquid, namely, by the interaction of surface and volume excitations of liquid helium, which rapidly decreases with temperature. Thus, the temperature dependence of the low-frequency mobility is µ dc ≈ 8.4 × 10 −11 neT −20/3 cm 4 K 20/3 /(V•s), where ne is the surface electron density. The relation T 20/3 E −3 ⊥ ≪ 2 × 10 −7 between the pressing electric field (in kV/cm) and temperature (in K) and the value ω 10 8 • T 5 K −5 s −1 of the driving-field frequency have been obtained, at which the above effect can be observed. In particular, E ⊥ ≃ 1 kV/cm corresponds to T 70 mK and ω/2π 30 Hz.

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confidence: 99%

Low-Temperature Mobility of Surface Electrons and Ripplon-Phonon Interaction in Liquid Helium

Safonov,

Safonova,

Demukh

2010

Preprint

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show abstract

“…However, the condition (10) was violated so that the relative contribution of the ripplonphonon interaction in helium to the mobility of the electron crystal was no more than ∼10 −5 . The technique of mobility measurement via the damping of hybrid phonon-ripplon modes of a Wigner solid seems to be fundamentally inapplicable for observing the effect under consideration, since the minimum frequency of the phonon-ripplon modes is given by the lattice constant of the electron crystal and the dispersion relation of ripplons and therefore cannot be smaller than ∼ (α/ρ) 1/2 n 3/4 e , where ρ = 0.145 g/cm 3 is the mass density of 4 He at T = 0 [23]. The mobility of the two-dimensional electron system can be also determined from its longitudinal conductivity σ xx measured in the Corbino geometry.…”

mentioning

confidence: 99%

“…One of possible solutions is to measure the heat transfer along the helium surface [4]. However, in this case, one has to use thin films to avoid a giant-effective thermal conductance of a bulk liquid, which could easily mask the surface heat transfer.…”

mentioning

confidence: 99%