Geometrical optimization of a local ballistic magnetic sensor

Yuhsuke Kanda, Tatsuya Nomura, Takashi Kimura, Masahiro Hara

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1 Citation (Scopus)


We have developed a highly sensitive local magnetic sensor by using a ballistic transport property in a two-dimensional conductor. A semiclassical simulation reveals that the sensitivity increases when the geometry of the sensor and the spatial distribution of the local field are optimized. We have also experimentally demonstrated a clear observation of a magnetization process in a permalloy dot whose size is much smaller than the size of an optimized ballistic magnetic sensor fabricated from a GaAs/AlGaAs two-dimensional electron gas.

Original languageEnglish
Article number142408
JournalApplied Physics Letters
Issue number14
Publication statusPublished - Apr 7 2014

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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