Flux-periodicity crossover from h/2e to h/e in aluminium nano-loops

C. Espy, O. J. Sharon, J. Braun, R. Garreis, F. Strigl, A. Shaulov, P. Leiderer, E. Scheer, Y. Yeshurun

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


We study the magnetoresistance of aluminium 'double-networks' formed by connecting the vertexes of nano-loops with relatively long wires, creating two interlaced subnetworks of small and large loops (SL and LL, respectively). Far below the critical temperature, Aharonov-Bohm like quantum interference effects are observed for both the LL and the SL subnetworks. When approaching T c, both exhibit the usual Little-Parks oscillations, with periodicity of the superconducting flux quantum Φ 0 =h/2e. For one sample, with a relatively large coherence length, ξ, at temperatures very close to T c, the Φ 0 periodicity of the SL disappears, and the waveform of the first period is consistent with that predicted recently for loops with a size a < ξ, indicating a crossover to 2Φ 0 periodicity.

Original languageEnglish
Article number012063
JournalJournal of Physics: Conference Series
Issue number1
StatePublished - 19 Apr 2018
Event28th International Conference on Low Temperature Physics, LT 2018 - Gothenburg, Sweden
Duration: 9 Aug 201716 Aug 2017

Bibliographical note

Publisher Copyright:
© Published under licence by IOP Publishing Ltd.


Dive into the research topics of 'Flux-periodicity crossover from h/2e to h/e in aluminium nano-loops'. Together they form a unique fingerprint.

Cite this