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EnglishYBaCuO nanowires were reproducibly fabricated down to widths of 50 nm. A Au/Ti cap layer on YBCO yielded high electrical performance up to temperatures above 80 K in single nanowires. Critical current density of tens of MA cm(-2) at T = 4.2 K and of 10 MA cm(-2) at 77 K were achieved that survive in high magnetic fields. Phase-slip processes were tuned by choosing the size of the nanochannels and the intensity of the applied external magnetic field. Data indicate that YBCO nanowires are a rather attractive system for the fabrication of efficient sensors, supporting the notion of futuristic THz devices.
http://hdl.handle.net/11384/6090| Titolo: | High critical current density and scaling of phase-slip processes in YBaCuO nanowires |
| Autori interni: | CARILLO, Franco BELTRAM, Fabio |
| Data di pubblicazione: | 2012 |
| Rivista: | SUPERCONDUCTOR SCIENCE & TECHNOLOGY |
| Abstract: | YBaCuO nanowires were reproducibly fabricated down to widths of 50 nm. A Au/Ti cap layer on YBCO yielded high electrical performance up to temperatures above 80 K in single nanowires. Critical current density of tens of MA cm(-2) at T = 4.2 K and of 10 MA cm(-2) at 77 K were achieved that survive in high magnetic fields. Phase-slip processes were tuned by choosing the size of the nanochannels and the intensity of the applied external magnetic field. Data indicate that YBCO nanowires are a rather attractive system for the fabrication of efficient sensors, supporting the notion of futuristic THz devices. |
| Handle: | http://hdl.handle.net/11384/6090 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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