Measurement of the barrier height of the reflective W {110} plane boundaries in surface diffusion of single atoms |
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| Authors: | Shi-Cai Wang TT Tsong |
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| Institution: | Physics Department, Pennsylvania State University, University Park, Pennsylvania 16802, USA |
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| Abstract: | Plane boundaries are in general reflective to diffusing atoms. From about 2000 heating periods of direct field ion microscope observations we have studied adatom plane edge interaction and determined the barrier heights of the W {110} plane boundaries in single atom diffusion of W, Re, and Ir. Using equations we have derived recently, the barrier heights ΔEb are found to be about 200 meV for these adatoms. |
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