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Imaging oersted field around current flowing wire based on a diamond scanning magnetometer
- Authors
- Lee, Y.; Lee, M.; Jo, J.; Lee, S.; Yoo, J.-W.; Choi, T.; Heinrich, A.; Lee, D.
- Issue Date
- 2월-2022
- Publisher
- Elsevier B.V.
- Keywords
- Diamond NV center; Imaging current flow; Scanning magnetometer
- Citation
- Current Applied Physics, v.34, pp.59 - 63
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- Current Applied Physics
- Volume
- 34
- Start Page
- 59
- End Page
- 63
- ISSN
- 1567-1739
- Abstract
- 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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