Geometric structure of Be„101̄0..
نویسندگان
چکیده
The structure of clean Be~101̄0! was determined by low-energy electron-diffraction ~LEED! I(V) analysis and the result compared to first-principles calculations. Both theory and experiment indicate that from the two possible terminations of the truncated bulk, the one with the shorter first-interlayer spacing is realized. The values for the multilayer relaxations obtained by LEED essentially coincide with the theoretical prediction. Although the magnitude of the firstto second-layer relaxation fits well into the trend observed on other simple metal surfaces, the driving force is probably different for beryllium. @S0163-1829~96!02520-9#
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تاریخ انتشار 1996