Magnetotransport and trapping of magnetic domain walls in spin valves with nanoconstrictions

S. J. Noh, B. S. Chun, H. C. Wu, I. V. Shvets, I. C. Chu, M. Abid, S. Serrano-Guisan, Y. K. Kim

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


In a magnetic nanowire, a magnetic domain wall (DW) can move along the wire when an applied magnetic field or a spin-polarized current is applied. A magnetic spin-valve device composed of two nanowires connected by a nanosized constriction was prepared, on which the presence of a pinned DW by nanoconstriction was detected by giant magnetoresistance effect. When the magnetic wire has a nanoconstriction, the DW configuration and width were largely affected by the shape of nanoconstriction. An asymmetric magnetotransport behavior observed in the experiments was interpreted by a micromagnetic modeling study.

Original languageEnglish
Article number6027720
Pages (from-to)2436-2439
Number of pages4
JournalIEEE Transactions on Magnetics
Issue number10
Publication statusPublished - 2011 Oct


  • Nanoconstriction
  • magnetic domain wall (DW)
  • magnetoresistance
  • nanowire

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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