Results 151 to 160 of about 1,913,601 (192)
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Electron and positron work functions of cobalt silicide
Surface Science, 1988Abstract By studying the re-emission of positrons implanted into a clean 250 A epitaxial film of CoSi2 on Si we have determined that the electron and positron work functions at 300 K are 4.62±0.07 and -0.46±0.05 eV respectively. The positron yield extrapolated to zero implantation energy is 0.23±0.01.
E.M. Gullikson +2 more
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Molybdenum work function determined by electron emission microscopy
Metallurgical Transactions, 1971A polycrystalline molybdenum sample was recrystallized and thermally stabilized. Quantitative measurements of the emission from each individual grain were obtained with an electron emission microscope. The effective work function for each grain was then calculated.
Dean L. Jacobson, Albert E. Campbell
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Lithium electron work function: State of the art
Technical Physics, 2015Main findings on the lithium electron work function in ultrahigh vacuum, including the results of the authors, are reviewed. The data were obtained by the Fowler absolute method on polycrystalline lithium samples with various purity grades. It turns out that published data for the emissivity and work function of the lithium electron are scarce.
B. B. Alchagirov +3 more
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The work function of an electron gas
Journal of Physics A: General Physics, 1971An investigation of the temperature variation of the work function of an electron gas is made by collective electron theory methods.
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Electron work function in alloys with alkali metals
Technical Physics, 2012The electron work function in alloys and compounds containing alkali metals, which are of interest for the designing of new photocathode materials and further development of the theory of electron emission, is studied. It is shown that a number of applied and theoretical issues in this field are poorly understood.
B. B. Alchagirov +2 more
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Anisotropy of the Electronic Work Function of Metals
Physical Review, 1941Work function is experimentally known to be different for different faces of a crystal by amounts ranging from one-tenth to half a volt. For tungsten the faces can be arranged according to decreasing work function as follows: 110, 211, 100 and finally 111.
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Photo-electron emission microscopy of work function changes
Ultramicroscopy, 1983Abstract Photo-electron emission microscopy (PEEM) under ultra-high vacuum (UHV) conditions is one of the various surface imaging techniques least developed but nevertheless most promising. Excited by ultra-violet radiation, the low energy photo-electrons are only surface sensitive via the effect of the work function.
H. Bethge, M. Klaua
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Probing local work function of electron emitting Si-nanofacets
Applied Surface Science, 2017Large area, Si-nanofacets are synthesized by obliquely incident low energy Ar+-ion-beam bombardment at room temperature (RT). The field emission properties of such nanofacets are studied based on current–voltage measurements and the Fowler–Nordheim equation.
Tanmoy Basu, Tapobrata Som
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Work function and electron emission from nanocrystalline Pd films
Vacuum, 2001Abstract In this paper the results of an investigation of two multi-phase film systems composed of Pd nanocrystals placed in carbonaceous or fullerenes matrices are presented. The films were obtained by thermal deposition (from two separated sources at the same time) of an Pd acetate and C60/C70 fullerenes mixture from two separate sources ...
E. Czerwosz +4 more
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Electronic work-function calculations of polycrystalline metal surfaces revisited
Physical Review B, 2001A brief comparison of methods used to calculate the electronic work function of polycrystalline metal surfaces is presented. We show that the ab initio methods are unable to give values in acceptable agreement with experiments, whereas simple models based on the free-electron gas approach and classical electrodynamics work well, even in complicated ...
Tomasz Durakiewicz +4 more
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