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Phase boundaries between the 7 7 and the 5 2 Au structures on a Si(111) surface, which were located along the two-fold direction of the 5 2 structure, were dynamically studied using high-temperature scanning tunneling microscopy (STM) during Au deposition at 500°C. Two types of stable phase boundaries were observed depending on the growth direction of the 5 2 domain. The stable phase boundaries...
Step patterns on vicinal (2 x 1) reconstructed surfaces of noble metals Au(110) and Pt(110), miscut towards the (100) orientation, are investigated. The free energy of the reconstructed surface with a network of crossing opposite steps is calculated in the strong chirality regime when the steps cannot make overhangs. It is explained why the steps are not perpendicular to the direction of the miscut...
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