Transition-metal-doped group-IV monochalcogenides: a combination of two-dimensional triferroics and diluted magnetic semiconductors

Nanotechnology
Liu YangKailun Yao

Abstract

We report the first-principles evidence of a series of two-dimensional triferroics (ferromagnetic + ferroelectric + ferroelastic), which can be obtained by doping transition-metal ions in group-IV monochalcogenide (SnS, SnSe, GeS, GeSe) monolayers, noting that a ferromagnetic Fe-doped SnS2 monolayer has recently been realized (Li B et al 2017 Nat. Commun. 8 1958). The ferroelectricity, ferroelasticity and ferromagnetism can be coupled and the magnetization direction may be switched upon ferroelectric/ferroelastic switching, rendering electrical writing + magnetic reading possible. They can be also two-dimensional half-metals or diluted magnetic semiconductors, where p/n channels or even multiferroic tunneling junctions can be designed by variation in doping and incorporated into a monolayer wafer.

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Citations

Apr 2, 2020·Physical Chemistry Chemical Physics : PCCP·Jo Hsueh LeeShi-Hsin Lin
Mar 21, 2019·Physical Chemistry Chemical Physics : PCCP·Xilong XuYing Dai
Apr 10, 2019·Physical Chemistry Chemical Physics : PCCP·Tingting ZhongJun-Ming Liu
Oct 23, 2020·Physical Chemistry Chemical Physics : PCCP·Y HuX L Fan
Nov 25, 2021·Nanoscale·Yunye GaoYuerui Lu

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