Electric properties of metallic nanowires obtained in quantum vortices of superfluid helium
| Autor: | V. I. Matyushenko, Igor I. Khodos, Evgenii B Gordon, A. V. Karabulin, V. D. Sizov |
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| Rok vydání: | 2010 |
| Předmět: |
Materials science
Laser ablation Physics and Astronomy (miscellaneous) Condensed matter physics Condensation Nanowire General Physics and Astronomy chemistry.chemical_element Radius Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Superfluidity Condensed Matter::Materials Science Field electron emission chemistry Superfluid helium-4 Indium |
| Zdroj: | Low Temperature Physics. 36:590-595 |
| ISSN: | 1090-6517 1063-777X |
| DOI: | 10.1063/1.3481303 |
| Popis: | Laser ablation of metals in superfluid helium has been used to obtain nickel, indium, and lead nanowire bundles. Wires 5–8nm in diameter demonstrate metallic conductivity and are coupled with one another by point contacts. It is shown that the wire bundles attach to sharp tips introduced into the region of condensation and are up to 1cm long. The high intensity and low threshold of electron field emission are explained by the smallness of the radius of individual wires and the long length of a bundle. The superconducting transition temperature is shifted downwards by 2.9K in lead nanowires and upwards by more than 1K in indium nanowires. |
| Databáze: | OpenAIRE |
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