Direct Detection of the Magnetic Force and Field Coupling of Electronic Spins Using Photoinduced Magnetic Force Microscopy
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2024-09-25 |
| Journal | Nano Letters |
| Authors | Zhenrong Zhang, Qiang Zhu, Liangjie Li, Huan Fei Wen, Hao Guo |
| Institutions | North University of China, The University of Osaka |
Abstract
Section titled āAbstractāThe intrinsic spin of the electron and its associated magnetic moment can provide insights into spintronics. However, the interaction is extremely weak, as is the case with the coupling between an electronās spin and a magnetic field, and it poses significant experimental challenges. Here we demonstrate the direct measurement of polarized single NV<sup>-</sup> centers and their spin-spin coupling behaviors in diamond. By using photoinduced magnetic force microscopy, we obtain the extremely weak magnetic force coupling originating from the electron spin. The polarized spin state of NV<sup>-</sup> centers, transitioning from |0ā© to |Ā±1ā©, and their corresponding Zeeman effect can be characterized through their interaction with a magnetic tip. The result presents an advancement in achieving electron spin measurements by magnetic force, avoiding the need for manufacturing conductive substrates. This facilitates a better understanding and control of electron spin to novel electronic states for future quantum technologies.