عنوان
پدید آورنده
موضوع
رده
کتابخانه
محل استقرار
TLpq230795517
انگلیسی
Temperature dependent angle-resolved photoemission study of the valence bands of single crystal iridium
[Thesis]
H. Darhmaoui
King Fahd University of Petroleum and Minerals (Saudi Arabia)
1990
133
M.S.
King Fahd University of Petroleum and Minerals (Saudi Arabia)
1990
Temperature dependent angle-resolved x-ray photoemission valence bands spectra have been obtained from Iridium (111) single crystal using MgK\alpha excitations and emission both normal and non-normal to the surface. The temperature was varied from 120K to 630K and a high angular resolution of usd\le\pmusd 1.1 was used. These spectra show strong temperature dependence with dramatic changes occurring at 120K. Data obtained at different temperatures are used to deconvolute direct transition (DT) and non-direct transition (NDT) components via Shevchik's model. This model is found not to give full self consistency. The NDT components are different from the density of states and the DT components still include some residual intensity due to NDT. However, the spectral variations of the DT components agree semi-quantitatively with the predictions of a simple bulk DT model assuming free electron final state dispersion and constant matrix elements.
Physics
Pure sciences
H. Darhmaoui
مطالعه متن کتاب p
[Thesis]
276903
a
Y
