Geometrical optimization of a local ballistic magnetic sensor

Yuhsuke Kanda; Tatsuya Nomura; Takashi Kimura; Masahiro Hara

doi:10.1063/1.4871002

Geometrical optimization of a local ballistic magnetic sensor

Yuhsuke Kanda, Tatsuya Nomura, Takashi Kimura, Masahiro Hara

Condensed Matter Physics

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

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 language	English
Article number	142408
Journal	Applied Physics Letters
Volume	104
Issue number	14
DOIs	https://doi.org/10.1063/1.4871002
Publication status	Published - Apr 7 2014

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4871002

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