%0 Journal Article %1 sun2021magnetic %A Sun, Q. C. %A Song, T. C. %A Anderson, E. %A Brunner, A. %A Forster, J. %A Shalomayeva, T. %A Taniguchi, T. %A Watanabe, K. %A Grafe, J. %A Stohr, R. %A Xu, X. D. %A Wrachtrup, J. %B Nature Communications %D 2021 %K pi3 wrachtrup %T Magnetic domains and domain wall pinning in atomically thin CrBr3 revealed by nanoscale imaging %U https://www.nature.com/articles/s41467-021-22239-4 %V 12 %X The emergence of atomically thin van der Waals magnets provides a new platform for the studies of two-dimensional magnetism and its applications. However, the widely used measurement methods in recent studies cannot provide quantitative information of the magnetization nor achieve nanoscale spatial resolution. These capabilities are essential to explore the rich properties of magnetic domains and spin textures. Here, we employ cryogenic scanning magnetometry using a single-electron spin of a nitrogen-vacancy center in a diamond probe to unambiguously prove the existence of magnetic domains and study their dynamics in atomically thin CrBr3. By controlling the magnetic domain evolution as a function of magnetic field, we find that the pinning effect is a dominant coercivity mechanism and determine the magnetization of a CrBr3 bilayer to be about 26 Bohr magnetons per square nanometer. The high spatial resolution of this technique enables imaging of magnetic domains and allows to locate the sites of defects that pin the domain walls and nucleate the reverse domains. Our work highlights scanning nitrogen-vacancy center magnetometry as a quantitative probe to explore nanoscale features in two-dimensional magnets. Van der Waals (vdW) magnets have allowed researchers to explore the two dimensional limit of magnetisation; however experimental challenges have hindered analysis of magnetic domains. Here, using an NV centre based probe, the authors analyse the nature of magnetic domains in the vdW magnet, CrBr3. %Z Ri4kvTimes Cited:0Cited References Count:53

@article{sun2021magnetic, abstract = {The emergence of atomically thin van der Waals magnets provides a new platform for the studies of two-dimensional magnetism and its applications. However, the widely used measurement methods in recent studies cannot provide quantitative information of the magnetization nor achieve nanoscale spatial resolution. These capabilities are essential to explore the rich properties of magnetic domains and spin textures. Here, we employ cryogenic scanning magnetometry using a single-electron spin of a nitrogen-vacancy center in a diamond probe to unambiguously prove the existence of magnetic domains and study their dynamics in atomically thin CrBr3. By controlling the magnetic domain evolution as a function of magnetic field, we find that the pinning effect is a dominant coercivity mechanism and determine the magnetization of a CrBr3 bilayer to be about 26 Bohr magnetons per square nanometer. The high spatial resolution of this technique enables imaging of magnetic domains and allows to locate the sites of defects that pin the domain walls and nucleate the reverse domains. Our work highlights scanning nitrogen-vacancy center magnetometry as a quantitative probe to explore nanoscale features in two-dimensional magnets. Van der Waals (vdW) magnets have allowed researchers to explore the two dimensional limit of magnetisation; however experimental challenges have hindered analysis of magnetic domains. Here, using an NV centre based probe, the authors analyse the nature of magnetic domains in the vdW magnet, CrBr3. }, added-at = {2021-06-21T10:21:58.000+0200}, annote = {Ri4kvTimes Cited:0Cited References Count:53}, author = {Sun, Q. C. and Song, T. C. and Anderson, E. and Brunner, A. and Forster, J. and Shalomayeva, T. and Taniguchi, T. and Watanabe, K. and Grafe, J. and Stohr, R. and Xu, X. D. and Wrachtrup, J.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/223866ab598789a0efac9f1ae6c73fc49/shirschmann}, booktitle = {Nature Communications}, interhash = {2c16699ad6b7437e4d3ac888324af3b1}, intrahash = {23866ab598789a0efac9f1ae6c73fc49}, issn = {2041-1723}, keywords = {pi3 wrachtrup}, series = 1, timestamp = {2021-06-21T08:21:58.000+0200}, title = {Magnetic domains and domain wall pinning in atomically thin CrBr3 revealed by nanoscale imaging}, url = {https://www.nature.com/articles/s41467-021-22239-4}, volume = 12, year = 2021 }