Two-dimensional multiferroic material of metallic p-doped SnSe

Ruofan Du, Yuzhu Wang, Mo Cheng, Peng Wang, Hui Li, Wang Feng, Luying Song, Jianping Shi () and Jun He ()
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Ruofan Du: Wuhan University
Yuzhu Wang: Wuhan University
Mo Cheng: Wuhan University
Peng Wang: Wuhan University
Hui Li: Wuhan University
Wang Feng: Wuhan University
Luying Song: Wuhan University
Jianping Shi: Wuhan University
Jun He: Wuhan University

Nature Communications, 2022, vol. 13, issue 1, 1-9

Abstract: Abstract Two-dimensional multiferroic materials have garnered broad interests attributed to their magnetoelectric properties and multifunctional applications. Multiferroic heterostructures have been realized, nevertheless, the direct coupling between ferroelectric and ferromagnetic order in a single material still remains challenging, especially for two-dimensional materials. Here, we develop a physical vapor deposition approach to synthesize two-dimensional p-doped SnSe. The local phase segregation of SnSe2 microdomains and accompanying interfacial charge transfer results in the emergence of degenerate semiconductor and metallic feature in SnSe. Intriguingly, the room-temperature ferrimagnetism has been demonstrated in two-dimensional p-doped SnSe with the Curie temperature approaching to ~337 K. Meanwhile, the ferroelectricity is maintained even under the depolarizing field introduced by SnSe2. The coexistence of ferrimagnetism and ferroelectricity in two-dimensional p-doped SnSe verifies its multiferroic feature. This work presents a significant advance for exploring the magnetoelectric coupling in two-dimensional limit and constructing high-performance logic devices to extend Moore’s law.

Date: 2022
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DOI: 10.1038/s41467-022-33917-2

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