Elliptical multielectron dimples on liquid and solid helium surfaces
نویسندگان
چکیده
منابع مشابه
Studying electrons on curved surfaces by trapping and manipulating multielectron bubbles in liquid helium.
Investigations of two-dimensional electron systems (2DES) have been achieved with two model experimental systems, covering two distinct, non-overlapping regimes of the 2DES phase diagram, namely the quantum liquid phase in semiconducting heterostructures and the classical phases observed in electrons confined above the surface of liquid helium. Multielectron bubbles in liquid helium offer an ex...
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The stability of multielectron bubbles (MEBs) in liquid helium is investigated using the liquid-drop model for fissioning nuclei. Whereas a critical positive pressure can make the bubble unstable against fissioning, a small negative pressure suffices to introduce a restoring force preventing any small deformation of the bubble to grow. We also find that there exists an energy barrier making MEB...
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of a bubble (F is the diele~tric onstant of liquid helium) gives the class~cal *'Coulomb radius" of the bubble (this value is accurate for the bubbles considered ( 5 , 6)). For typical charges Z of 10510' electrons, this yields radii between 10 and 100 pm. The electrons in a bubble are confined to a narrow region of only a fcw Bngstrorns width close to the bubble surface, owing to their mutual ...
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We have investig4ated multielectron bubbles (with charges Z,,, 10 6 electrons) in normal liquid He. The drift velocity in an electric field and the charge of the bubbles were measured simultaneously. We found the drag coeJficient to be over an order of magnitude higher than expected from ordinary hydrodynamics. The velocities did not show a correlation with the charge and could vary up to a fac...
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We explore excitation and ionization by neutron impact as a novel tool for the investigation of electron-electron correlations in helium. We present single- and double-ionization spectra calculated in accurate numerical ab initio simulations for incoming neutrons with kinetic energies of up to 150 keV. The resulting electron spectra are found to be fundamentally different from photoionization o...
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ژورنال
عنوان ژورنال: Solid State Communications
سال: 1983
ISSN: 0038-1098
DOI: 10.1016/0038-1098(83)90560-4