Journal
PHYSICAL REVIEW B
Volume 85, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.033404
Keywords
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Funding
- Baden-Wurttemberg-Stiftung in the framework of its excellence program for postdoctoral researchers
- European Research Council [239838]
- Karlsruhe House of Young Scientists
- NSERC
- FQRNT
- CIFAR
- CFI
- European Research Council (ERC) [239838] Funding Source: European Research Council (ERC)
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We show scanning probe microscopy measurements of metallic nanocontacts between controlled electromigration cycles. The nanowires used for the thinning process are fabricated by shadow evaporation. The highest resolution obtained using scanning force microscopy is about 3 nm. During the first few electromigration cycles the overall slit structure of the nanocontact is formed. The slit first passes along grain boundaries and then at a later stage vertically splits grains in the course of consuming them. We find that first the whole wire is heated, and later during the thinning process as the slit forms the current runs over several smaller contacts and less power is needed.
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