Journal
NANO LETTERS
Volume 8, Issue 11, Pages 3845-3849Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl802264x
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- Department of Energy [DE-FG02-04ER46175]
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The preparation and electrical properties of high-temperature superconductor nanowire arrays are reported for the first time. YBa2Cu3O7-delta nanowires with widths as small as 10 nm (much smaller than the magnetic penetration depth) and lengths up to 200 mu m are studied by four-point electrical measurements. All nanowires exhibit a superconducting transition above liquid nitrogen temperature and a transition temperature width that depends strongly upon the nanowire dimensions. Nanowire size effects are systematically studied, and the results are modeled satisfactorily using phase-slip theories that generate reasonable parameters. These nanowires can function as superconducting nanoelectronic components over much wider temperature ranges as compared to conventional superconductor nanowires.
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