Creation of vortices by ferromagnetic order in ErNi2B 2C

Hazuki Kawano-Furukawa, Yoko Ishida, Fumiko Yano, Rieko Nagatomo, Ayano Noda, Takashi Nagata, Seiko Ohira-Kawamura, Chiyako Kobayashi, Hideki Yoshizawa, Ken Littrell, Barry L. Winn, Nobuo Furukawa, Hiroyuki Takeya

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

In ErNi2B2C a microscopic and stable coexistence of ferromagnetism and superconductivity has been confirmed. In order to explore a possibility of the spontaneous vortex state, we performed small angle neutron scattering experiments. The results show that, in a field cooled process, an effective field evaluated by the vortex distance (scattering pattern) shows a clear increase as the system enters the weak ferromagnetic phase. This provides a direct evidence that an internal magnetic field mediated by the weak ferromagnetic order creates new vortices and affects the flux line lattice structure.

Original languageEnglish
Pages (from-to)S716-S718
JournalPhysica C: Superconductivity and its Applications
Volume470
Issue numberSUPPL.1
DOIs
StatePublished - Dec 2010

Funding

The Research at Oak Ridge National Laboratory’s High Flux Isotope Reactor was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy . H.K.-F. was partially supported by the US - Japan Cooperative Research Program on Neutron Scattering between the US DOE and Japanese MEXT.

Keywords

  • Ferromagnetic superconductor
  • Rare-earth nickel borocarbide
  • Small angle neutron scattering
  • Spontaneous vortex

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