Journal
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS
Volume 40, Issue 1AB, Pages L71-L74Publisher
INST PURE APPLIED PHYSICS
DOI: 10.1143/JJAP.40.L71
Keywords
point contact; nanowire; high-resolution transmission electron microscopy; quantized conductance; gold
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The atomic arrangement and conductance during the separation process of gold point contacts were simultaneously observed in situ by high-resolution transmission electron microscopy. One-dimensional arrangements of gold single atoms, i.e., atomic wires, appeared between two tips at the point contacts. They were stable when their length was increased up to 2.6 nm. The interatomic distance of the wires was 0.25-0.31 nm. Ir was found that metal-insulator transition occurs in the wires.
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