Characterization of room-temperature in-plane magnetization in thin flakes of CrTe$_2$ with a single spin magnetometer
| Autor: | Fabre, F., Finco, A., Purbawati, A., Hadj-Azzem, A., Rougemaille, N., Coraux, J., Philip, I., Jacques, V. |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Phys. Rev. Materials 5, 034008 (2021) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevMaterials.5.034008 |
| Popis: | We demonstrate room-temperature ferromagnetism with in-plane magnetic anisotropy in thin flakes of the CrTe$_2$ van der Waals ferromagnet. Using quantitative magnetic imaging with a single spin magnetometer based on a nitrogen-vacancy defect in diamond, we infer a room-temperature in-plane magnetization in the range of $M\sim 27$ kA/m for flakes with thicknesses down to $20$ nm. In addition, our measurements indicate that the orientation of the magnetization is not determined solely by shape anisotropy in micron-sized CrTe$_2$ flakes, which suggest the existence of a non-negligible magnetocrystalline anisotropy. These results make CrTe$_2$ a unique system in the growing family of van der Waals ferromagnets, as it is the only material platform known to date which offers an intrinsic in-plane magnetization and a Curie temperature above $300$ K in thin flakes. Comment: 9 pages, 5 figures |
| Databáze: | arXiv |
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