Scanning tunneling microscopy study of a Ag monolayer on Cu(111) |
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| Institution: | 1. State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China;2. Department of Mechanical & Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, USA;1. Mechanical and Materials of Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, United States;2. Department of Materials Science and Engineering, and Department of Mechanical Engineering, College of Engineering, University of Michigan, Ann Arbor, MI 48109-2136, United States;1. The State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China;2. The State Key Lab of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China |
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| Abstract: | The structure of submonolayer Ag deposited on Cu(111) has been examined with scanning tunneling microscopy. The long diffusion length of Ag leads to the formation of large (111)-like islands nucleating from the “downhill” side of Cu step edges. The growth fronts of the Ag islands are mostly straight and lie along the 〈1̄10〉 directions. The Ag overlayer is apparently slightly compressed relative to bulk Ag, and forms a mixture of superstructures rotated slightly relative to the substrate. |
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