Remarkable enhancement of magnetization in the superconducting state of In/Ni nanoparticle composites by inhomogeneous spin anti-screening

Chi Hung Lee, Chi Yen Li, Sunil K. Karna, Erdembayalag Batsaikhan, Shih Bin Liu, Chi Hang Hung, Yang Yuan Chen, Wen Hsien Li

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1 Scopus citations

Abstract

An enhancement of the superconducting transition temperature and development of an additional magnetic component in the superconducting state, initiated by inhomogeneous spin anti-screening are demonstrated in In/Ni nanoparticle composites. A significant 9% increase of the superconducting transition temperature as a consequence of the magnetic proximities is detected. Unconventional cross-shaped magnetization hysteresis loops appear in densely packed assemblies, where magnetization increases, rather than decreases, upon entering the superconducting state in field-decreasing loops. Surprisingly, magnetization in the superconducting state can reach values as large as 3.5 times the saturation magnetization revealed in the normal state.

Original languageEnglish
Article number2447
JournalJournal of Nanoparticle Research
Volume16
Issue number6
DOIs
StatePublished - Jun 2014

Keywords

  • Anti-screening
  • In nanoparticle
  • Magnetization
  • Superconductivity

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