Weber blockade in superconducting nanowires

Autor:	Morgan-Wall, Tyler, Leith, Benjamin, Hartman, Nikolaus, Rahman, Atikur, Markovic, Nina
Rok vydání:	2014
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. Lett. 114, 077002 (2015)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.114.077002
Popis:	We have measured the critical current as a function of magnetic field in short and narrow superconducting aluminum nanowires. In the range of magnetic fields in which vortices can enter a nanowire in a single row, we find regular oscillations of the critical current as a function of magnetic field. The oscillations are found to correspond to adding a single vortex to the nanowire, with the number of vortices on the nanowire staying constant within each period of the oscillation. This effect can be thought of as a Weber blockade, and the nanowires act as quantum dots for vortices, analogous to the Coulomb blockade for electrons in quantum dots. Comment: 5 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1406.6802 Zobrazit plný text záznamu View this record from Arxiv