Linear Magnetoelectric Phase in Ultrathin MnPS_{3} Probed by Optical Second Harmonic Generation

The transition metal thiophosphates MPS_{3} (M=Mn, Fe, Ni) are a class of van der Waals stacked insulating antiferromagnets that can be exfoliated down to the ultrathin limit. MnPS_{3} is particularly interesting because its Néel 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 MnPS_{3} remains stable in the ultrathin limit. Using optical second harmonic generation rotational anisotropy, we show that long-range linear magnetoelectric type Néel order in MnPS_{3} persists down to at least 5.3 nm thickness. However an unusual mirror symmetry breaking develops in ultrathin samples on SiO_{2} substrates that is absent in bulk materials, which is likely related to substrate induced strain.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:124

Enthalten in:

Physical review letters - 124(2020), 2 vom: 17. Jan., Seite 027601

Sprache:

Englisch

Beteiligte Personen:

Chu, Hao [VerfasserIn]
Roh, Chang Jae [VerfasserIn]
Island, Joshua O [VerfasserIn]
Li, Chen [VerfasserIn]
Lee, Sungmin [VerfasserIn]
Chen, Jingjing [VerfasserIn]
Park, Je-Geun [VerfasserIn]
Young, Andrea F [VerfasserIn]
Lee, Jong Seok [VerfasserIn]
Hsieh, David [VerfasserIn]

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Anmerkungen:

Date Revised 07.02.2020

published: Print

Citation Status PubMed-not-MEDLINE

doi:

10.1103/PhysRevLett.124.027601

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM305997165