Little-Parks oscillations at low temperatures: Gigahertz resonator method

Andrey Belkin, Matthew Brenner, Thomas Aref, Jaseung Ku, Alexey Bezryadin

Research output: Contribution to journalArticle

Abstract

A thin-film Fabry-Perot superconducting resonator is used to reveal the Little and Parks (LP) effect [Phys. Rev. Lett. 9, 9 (1962)], even at temperatures much lower than the critical temperature. A pair of parallel nanowires is incorporated into the resonator at the point of the supercurrent antinode. As the magnetic field is ramped, Meissner currents develop, changing the resonance frequency of the resonator. The LP oscillation is revealed as a periodic set of distorted parabolas observed in the transmission of the resonator and corresponds to the states of the wire loop having different vorticities. We also report a direct observation of single and double phase slip events.

Original languageEnglish (US)
Article number242504
JournalApplied Physics Letters
Volume98
Issue number24
DOIs
StatePublished - Jun 13 2011

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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