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

Lee, Y.; Lee, M.; Jo, J.; Lee, S.; Yoo, J.-W.; Choi, T.; Heinrich, A.; Lee, D.

doi:10.1016/j.cap.2021.12.001

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

Lee, Y.;
Lee, M.;
Jo, J.;
Lee, S.;
Yoo, J.-W.;
... Lee, D.;
외 2명

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4

초록

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

키워드

Diamond NV center; Imaging current flow; Scanning magnetometer; CURRENT-DENSITY; SPIN; ELECTRONS

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

저자: Lee, Y.; Lee, M.; Jo, J.; Lee, S.; Yoo, J.-W.; Choi, T.; Heinrich, A.; Lee, D.

DOI: 10.1016/j.cap.2021.12.001

발행일: 2022-02

유형: Article

저널명: Current Applied Physics

권: 34

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