GIST Scholar
College of Natural Sciences
Department of Physics and Photon Science
1. Journal Articles
Linear Magnetoelectric Phase in Ultrathin MnPS3 Probed by Optical Second Harmonic Generation
- Type
- Article
- Citation
- Physical Review Letters, v.124, no.2
- Issued Date
- 2020-01
- Abstract
- The transition metal thiophosphates MPS3 (M = Mn, Fe, Ni) are a class of van der Waals stacked insulating antiferromagnets that can be exfoliated down to the ultrathin limit. MPS3 is particularly interesting because its Neel ordered state breaks both spatial-inversion and time-reversal symmetries, allowing for a linear magnetoelectric phase that is rare among van der Waals materials. However, it is unknown whether this unique magnetic structure of bulk MPS(3 )remains stable in the ultrathin limit. Using optical second harmonic generation rotational anisotropy, we show that long-range linear magnetoelectric type Neel order in MPS3 persists down to at least 5.3 nm thickness. However an unusual mirror symmetry breaking develops in ultrathin samples on SiO2 substrates that is absent in bulk materials, which is likely related to substrate induced strain.
- Publisher
- American Physical Society
- ISSN
- 0031-9007
- Appears in Collections:
- Department of Physics and Photon Science > 1. Journal Articles
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