Birowska, Magdalena and Faria Junior, Paulo E. and Fabian, Jaroslav and Kunstmann, Jens (2021) Large exciton binding energies in MnPS3 as a case study of a van der Waals layered magnet. PHYSICAL REVIEW B, 103 (12): L121108. ISSN 2469-9950, 2469-9969
Full text not available from this repository. (Request a copy)Abstract
Stable excitons in semiconductor monolayers such as transition-metal dichalcogenides (TMDCs) enable and motivate fundamental research as well as the development of room-temperature optoelectronics applications. The newly discovered layered magnetic materials present a unique opportunity to integrate optical functionalities with magnetism. We predict that a large class of antiferromagnetic semiconducting monolayers of the MPX3 family exhibit giant excitonic binding energies, making them suitable platforms for magneto-optical investigations and optospintronics applications. Indeed, our investigations, based on first-principles methods combined with an effective-model Bethe-Salpeter solver, show that excitons in bare Neel-MnPS3 are bound by more than 1 eV, which is twice the excitonic energies in TMDCs. In addition, the antiferromagnetic ordering of monolayer samples can be inferred indirectly using different polarization of light.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | AB-INITIO; OPTICAL-SPECTRA; FERROMAGNETISM; MONOLAYER; STACKING; MN; FE |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 Aug 2022 05:51 |
| Last Modified: | 25 Aug 2022 05:51 |
| URI: | https://pred.uni-regensburg.de/id/eprint/46952 |
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