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Title: Geometrical optimization of a local ballistic magnetic sensor

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.

Authors:
;  [1];  [2];  [2]
  1. Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555 (Japan)
  2. Advanced Electronics Research Division, INAMORI Frontier Research Center, Kyushu University, 744 Motooka, Fukuoka 819-0395 (Japan)
Publication Date:
OSTI Identifier:
22261566
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 104; Journal Issue: 14; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALUMINIUM ARSENIDES; GALLIUM ARSENIDES; GEOMETRY; MAGNETIZATION; OPTIMIZATION; PERMALLOY; SENSITIVITY; SENSORS

Citation Formats

Kanda, Yuhsuke, Hara, Masahiro, Nomura, Tatsuya, Kimura, Takashi, and Department of Physics, Kyushu University, 6-10-1 Hakozaki, Fukuoka 812-8581. Geometrical optimization of a local ballistic magnetic sensor. United States: N. p., 2014. Web. doi:10.1063/1.4871002.
Kanda, Yuhsuke, Hara, Masahiro, Nomura, Tatsuya, Kimura, Takashi, & Department of Physics, Kyushu University, 6-10-1 Hakozaki, Fukuoka 812-8581. Geometrical optimization of a local ballistic magnetic sensor. United States. https://doi.org/10.1063/1.4871002
Kanda, Yuhsuke, Hara, Masahiro, Nomura, Tatsuya, Kimura, Takashi, and Department of Physics, Kyushu University, 6-10-1 Hakozaki, Fukuoka 812-8581. 2014. "Geometrical optimization of a local ballistic magnetic sensor". United States. https://doi.org/10.1063/1.4871002.
@article{osti_22261566,
title = {Geometrical optimization of a local ballistic magnetic sensor},
author = {Kanda, Yuhsuke and Hara, Masahiro and Nomura, Tatsuya and Kimura, Takashi and Department of Physics, Kyushu University, 6-10-1 Hakozaki, Fukuoka 812-8581},
abstractNote = {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.},
doi = {10.1063/1.4871002},
url = {https://www.osti.gov/biblio/22261566}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 14,
volume = 104,
place = {United States},
year = {Mon Apr 07 00:00:00 EDT 2014},
month = {Mon Apr 07 00:00:00 EDT 2014}
}