Detection of edge magnetic state by a ballistic bend resistance measurement

Takahiro Matsunaga, Kohsuke Furukawa, Yuhsuke Kanda, Masahiro Hara, Tatsuya Nomura, Takashi Kimura

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Abstract

We have investigated a magnetization process of a permalloy nanowire by using a ballistic micro-Hall sensor consisting of GaAs/AlGaAs two-dimensional electron gas. Although a conventional bi-stable hysteresis loop with a rectangular shape was observed in the Hall resistance measurement, unexpected extra resistance changes were observed in a bend resistance measurement. These unconventional features are quantitatively explained by the magnetic transitions among the meta-stable edge-domain structures in the ferromagnetic wire. The geometrical dependence of these resistance changes and their application possibility for the multiple-valued memory were also discussed.

Original languageEnglish
Article number252405
JournalApplied Physics Letters
Volume102
Issue number25
DOIs
Publication statusPublished - Jun 24 2013

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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