Photo-Electron Emission from Bare Surface of Metals.
نویسندگان
چکیده
منابع مشابه
Photo Electron Emission Microscopy of Polarity-patterned Materials Photo Electron Emission Microscopy of Polarity-patterned Materials
This study presents variable photon energy photo electron emission microscopy (PEEM) of polarity-patterned epitaxial GaN films, and ferroelectric LiNbO3 (LNO) single crystals and PbZrTiO3 (PZT) thin films. The photo electrons were excited with spontaneous emission from the tunable UV free electron laser (FEL) at Duke University. We report PEEM observation of polarity contrast and measurement of...
متن کاملImaging electron emission from diamond and III–V nitride surfaces with photo-electron emission microscopy
Ž . Wide bandgap semiconductors such as diamond and the III–V nitrides GaN, AlN, and AlGaN alloys exhibit small or even negative electron affinities. Results have shown that different surface treatments will modify the electron affinity of Ž . diamond to cause a positive or negative electron affinity NEA . This study describes the characterization of these surfaces Ž . with photo-electron emiss...
متن کاملCalculation of Secondary Electron Emission Yield From MgO Surface
Secondary electron emission yield values for rare-gas particles (He, Ne, Ar, Kr, and Xe ions of atoms and molecules, metastable atoms, and excimers) of MgO deposited under optimum conditions for the highest values were calculated assuming the Auger transitions between the valence band, and the (oxygen ion vacancy + two electrons) and + (oxygen ion vacancy + one electron) centers in the MgO surf...
متن کاملSurface-state electron dynamics in noble metals
Theoretical investigations of surface-state electron dynamics in noble metals are reported. The dynamically screened interaction is computed, within many-body theory, by going beyond a free-electron description of the metal surface. Calculations of the inelastic linewidth of Shockley surface-state electrons and holes in these materials are also presented. While the linewidth of excited holes at...
متن کاملPair emission from bare magnetized strange stars
The dominant emission from bare strange stars is thought to be electron-positron pairs, produced through spontaneous pair creation (SPC) in a surface layer of electrons tied to the star by a superstrong electric field. The positrons escape freely, but the electrons are directed towards the star and quickly fill all available states, such that their degeneracy suppresses further SPC. An electron...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Society of Materials Science, Japan
سال: 1991
ISSN: 1880-7488,0514-5163
DOI: 10.2472/jsms.40.1100