Non-conventional superconductivity in magnetic In and Sn nanoparticles

Ma Hsuan Ma, Erdembayalag Batsaikhan, Huang Nan Chen, Ting Yang Chen, Chi Hung Lee, Wen Hsien Li, Chun Ming Wu, Chin Wei Wang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We report on experimental evidence of non-conversional pairing in In and Sn nanoparticle assemblies. Spontaneous magnetizations are observed, through extremely weak-field magnetization and neutron-diffraction measurements, to develop when the nanoparticles enter the superconducting state. The superconducting transition temperature TC shifts to a noticeably higher temperature when an external magnetic field or magnetic Ni nanoparticles are introduced into the vicinity of the superconducting In or Sn nanoparticles. There is a critical magnetic field and a critical Ni composition that must be reached before the magnetic environment will suppress the superconductivity. The observations may be understood when assuming development of spin-parallel superconducting pairs on the surfaces and spin-antiparallel superconducting pairs in the core of the nanoparticles.

Original languageEnglish
Article number775
JournalScientific Reports
Volume12
Issue number1
DOIs
StatePublished - Dec 2022

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