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By depositing sub-monolayer Au atoms onto a heated and slightly misaligned Si(111)-(7×7) surface, (5×2) stripes form on the upper step edges of terraces. Upon further heating, most of the terraces transform into either Au-free (7×7) terraces or fully reconstructed (5×2) terraces. By analyzing the distance distribution between neighboring (5×2) terraces, we have found the existence of an optimal distance...
High quality MgO film has been grown on SrTiO 3 (001) by an oxygen-plasma-assisted molecular beam epitaxp system. Although the bulk mismatch of the two cubic structures is 7.8%, the surface lattice mismatch is as large as 23.7%. Reflection high energy electron diffraction (RHEED) provides direct evidence indicating that single crystalline MgO forms with nearly relaxed lattice constant from...
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