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 cm2 at T D 4:2 K and of 10 MA cm2 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.
High critical current density and scaling of phase-slip processes in YBaCuO nanowires / Papari, G.; Carillo, Franco; Stornaiuolo, Daniela; Longobardi, L.; Beltram, F.; Tafuri, Francesco. - In: SUPERCONDUCTOR SCIENCE & TECHNOLOGY. - ISSN 0953-2048. - 25:035011(2012), pp. 1-5. [10.1088/0953-2048/25/3/035011]
High critical current density and scaling of phase-slip processes in YBaCuO nanowires
G. Papari;CARILLO, FRANCO;STORNAIUOLO, DANIELA;Tafuri, Francesco
2012
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 cm2 at T D 4:2 K and of 10 MA cm2 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
