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Article
Micrometric Ripplons for Structure Experiment
Diffraction of micrometric ripplons in superfluid helium is proposed for probing the structure factor of a 2-dimensional electron system. Production and detection techniques for the ripplons are developped and.....
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Article
Measurement of the surface tension of superfluid4He at low temperature by capillary wave resonances
The surface tension of liquid4He is determined from the frequencies of micron wavelength capillary waves. The extrapolated zero temperature value, σ=375±3 μJm−2, is in agreement with the pioneering static capilla...
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Chapter
Thermodynamic Measurement on the Melting of a Two-Dimensional Electron Solid
The solid-liquid phase transition in two dimensions has proved to be a less simple problem than was once imagined. Even the simplest example of particles in a uniform two-dimensional (2D) space with repulsive ...
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Chapter
Propagation of Shear in a Two-Dimensional Electron Solid
A material is solid if it returns to its original shape upon removal of an applied shear stress. At finite frequency this property combines with inertia to give rise to shear waves. Shear waves are thus a fund...
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Article
New measurement of the superfluid4He surface tension by capillary wave resonances
Measurement of the resonance frequencies of micrometric capillary waves generated by interdigital plane capacitors permits high accuracy determination of the surface tension of superfluid4He. The value at OK: σ=3...
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Article
Co-tunneling of the charge through a 2-D electron island
A double barrier Single Electron Transistor is realized in two dimensions by confining the 2-D electron gas of a GaAs/GaAlAs heterojunction to a small island by means of Schottky gates. Two gates provide adjus...
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Chapter and Conference Paper
Electron Solid Formation at a Modulation Doped Heterojunction in a High Magnetic Field
By means of a radiofrequency spectroscopy experiment which tests for shear rigidity by detecting a gapless magneto-phonon excitation branch, we are able to affirm that electrons at a high quality modulation do...
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Chapter and Conference Paper
Low Wavevector Phonons in the 2-Dimensional Electron Solid on Liquid Helium
Electrons trapped at the liquid-vapour (essentially vacuum) interface of helium at low temperatures make an ideally simple system of particles in interaction: two-dimensional motion with very small non-uniform...
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Article
Electrons on a dielectric liquid-vapor interface. Stability in presence of normal magnetic field
The capillary wavelength instability of a charged liquid surface due to coupling between surface deformation and charge compression may be modified by altering the transport properties of the charges along the...