Suppression of superconductivity by interparticle interactions in Al nanoparticle assembly

Shih Bin Liu, Chia Tang Chen, Chun Ming Wu, Chin Wei Wang, Chih Jen Wang, Sunil K. Karna, Wen Hsien Li

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3 Scopus citations

Abstract

We report on the observations of enhanced superconductivity in a very loosely packed 6.8 nm Al nanoparticle assembly and the suppression of superconductivity by interparticle interactions, through ac magnetic susceptibility and magnetization measurements. TC and HC of the 6.8 nm Al particles are, respectively, 1.9 and 77 times higher than that of bulk Al. M(Ha) curves taken below and above TC can all be described by a Langevin profile, showing the existence of a spontaneous magnetic component in superconducting phase. Superconductivity is found to be gradually suppressed by interparticle interactions.

Original languageEnglish
Article number07E153
JournalJournal of Applied Physics
Volume109
Issue number7
DOIs
StatePublished - 1 Apr 2011

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