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Imaging oersted field around current flowing wire based on a diamond scanning magnetometer

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Title
Imaging oersted field around current flowing wire based on a diamond scanning magnetometer
Author(s)
Lee, Yuhan; Lee, Myeongwon; Jo, Junhyeon; Lee, Seokmin; Yoo, Jung-Woo; Taeyoung Choi; Andreas Heinrich; Lee, Donghun
Publication Date
2022-02-01
Journal
Current Applied Physics, v.34, pp.59 - 63
Publisher
Elsevier B.V.
Abstract
© 2021 Korean Physical SocietyWe demonstrate imaging current flow in a transport device by measuring the current-induced Oersted field. A diamond scanning magnetometer that hosts a single nitrogen-vacancy (NV) center at the tip apex is used to obtain the image. We fabricate a U-shape of Pt wire and study evolution of the Oersted field as the current continuously changes its direction along the wire. We find a good agreement between the obtained results and the simulated images based on the Biot-Savart law. In order to show the capability of imaging different field components, we perform the same experiment but with two different axes of the NV center. This work provides a novel imaging method of the current profile and can be applied to various transport experiments.
URI
https://pr.ibs.re.kr/handle/8788114/10984
DOI
10.1016/j.cap.2021.12.001
ISSN
1567-1739
Appears in Collections:
Center for Quantum Nanoscience(양자나노과학 연구단) > 1. Journal Papers (저널논문)
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