Imaging oersted field around current flowing wire based on a diamond scanning magnetometer
- 주제(키워드) Diamond NV center , Imaging current flow , Scanning magnetometer
- 등재 SCIE, SCOPUS, KCI등재
- 발행기관 Elsevier B.V.
- 발행년도 2022
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000193066
- 본문언어 영어
- Published As https://doi.org/10.1016/j.cap.2021.12.001
초록/요약
We 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. © 2021 Korean Physical Society
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