Magnon gap excitations in van der Waals antiferromagnet MnPSe$_3$
| Autor: | Jana, Dipankar, Vaclavkova, D., Mohelsky, I., Kapuscinski, P., Cho, C. W., Breslavetz, I., Białek, M., Ansermet, J. -Ph., Piot, B. A., Orlita, M., Faugeras, C., Potemski, M. |
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| Rok vydání: | 2023 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | Magneto-spectroscopy methods have been employed to study the zero-wavevector magnon excitations in MnPSe$_3$. Experiments carried out as a function of temperature and the applied magnetic field show that two low-energy magnon branches of MnPSe$_3$ in its antiferromagnetic phase are gapped. The observation of two low-energy magnon gaps (at 14 and 0.7 cm$^{-1}$) implies that MnPSe$_3$ is a biaxial antiferromagnet. A relatively strong out-of-plane anisotropy imposes the spin alignment to be in-plane whereas the spin directionality within the plane is governed by a factor of 2.5 $\times$ 10$^{-3}$ weaker in-plane anisotropy. Comment: 9 pages, 3 figures |
| Databáze: | arXiv |
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