Surface state electrons on solid hydrogen films
نویسندگان
چکیده
منابع مشابه
Surface State Electrons on a Hydrogen Film. 2. Influence of Adsorbed Helium Films
We have investigated the conductivity of surface state electrons on liquid 4He films supported by a quench-condensed thin solid hydrogen substrate. A pronounced dip in the ac-conductivity was observed as the He film thickness reached about 10 layers. This phenomenon was studied at different temperatures (range between 1.6 and 210, electron densities from 0.9 to 19x10S cm -2, frequencies between...
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Surface state electrons (SSE) on cryogenic surfaces such as helium, hydrogen and neon have been receiving continuous attention over the past years 1. They have been used as surface probes 2,3, but there is also major interest in the properties of the 2-dimensional electron system itself. High electron densities can be reached on solid substrates which furthermore allow to study the effects of v...
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Electrons on helium substrates form a model Coulomb system in which the transition from classical electron liquid to Wigner crystal is readily observed. However, attempts to increase the electron density in order to observe the ‘quantum melting’ of the system to a Fermi degenerate gas are hindered by an instability of the helium surface. Here we describe experimental efforts to reach the degene...
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We present investigations of surface state electrons on liquid helium film in confine geometry, using a suitable substrate structure microfabricated on a silicon wafer, s imilar to a Field Effect Transistor (FET). The sample 'has a SO Ul'ce and drain region, separated by a gate structure, wh ich consists of two go ld electrodes with a narrow gap (channel) through which the transport ofthe surfa...
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The mobility of surface bawd electrons i s monitored as helium i s adsorbed on a hydrogen substrate. Maxima i n t h e mobility occur a t t h e completion of each helium monolayer. U p t o nine maxima are observed, indicat ing that stepwise layering Occurs f o r a t l e a s t nine layers. A smooth var ia t ion of t h e mobility with fu r ther helium adsorption indicates t h a t continuous wettin...
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ژورنال
عنوان ژورنال: Physica B: Condensed Matter
سال: 1990
ISSN: 0921-4526
DOI: 10.1016/s0921-4526(09)80006-9