Ferro-piezoelectricity in emerging Janus monolayer BMX₂ (M = Ga, In and X = S, Se): ab initio investigations

Abstract

Nanoscale materials with inter-correlation characteristics are fundamental for developing high performance devices and applications. Hence theoretical research into unprecedented two dimensional (2D) materials is crucial for understanding especially when piezoelectricity...

Giant intrinsic piezoelectricity in 2D hybrid organic–inorganic perovskites [C6H11NH3]2MX4 (M = Ge, Sn, Pb; X = Cl, Br, I)

“…However, the complexity of preparation conditions renders them impractical for large-scale production. [28][29][30][31] 2D-HOIP thin films can be easily obtained from their 3D systems by the spin coating technique. 32,33 During the past few years, they have attracted the attention of physicists and chemists due to their merits of structural diversity, good material stability, and ease of fabrication.…”

Elemental Semimetal Ferroelectricity in Buckled Carbon Monolayers: Implications for Flexible Field-Effect Transistors

“…It is well-known that symmetry breaking in 2D materials holds significant potential to trigger emerging phenomena. The breaking of symmetry typically induces an intrinsic electric field within the monolayer, resulting in various properties such as ultrahigh carrier mobilities, piezoelectricity, − the Rashba effect, − ferroelectricity, − catalytic properties, and high hydrogen evolution reaction activity . Consequently, exploring symmetry breaking in 2D materials not only sheds light on fundamental physics principles but also holds promise for technological advancements in various fields from electronics to catalysis.…”

High spin polarization, large perpendicular magnetic anisotropy and room-temperature ferromagnetism by biaxial strain and carrier doping in Janus MnSeTe and MnSTe

“…The emerging 2D Janus materials with broken pristine symmetry compared with their pure counterparts have gained extensive attention because they might notably exhibit novel properties, such as electronic, piezoelectric and spintronic properties. [19][20][21][22][23][24][25][26] After the synthesis of Janus MoSSe and WSSe monolayers, 27,28 some Janus monolayers were observed. According to experimentally discovered VSe 2 13 and CrTe 2 , [29][30][31] the predicted Janus VSSe exhibits RT ferromagnetism with piezoelectricity, ferroelasticity and large valley polarization.…”