Room-temperature multiferroicity and diversified magnetoelectric couplings in 2D materials.

ABSTRACT: Multiferroics are rare in nature due to the mutual exclusive origins of magnetism and ferroelectricity. The simultaneous coexistence of robust magnetism/ferroelectricity and strong magnetoelectric coupling in single multiferroics is hitherto unreported, which may also be attributed to their potential conflictions. In this paper, we show the first-principles evidence of such desired coexistence in ultrathin-layer CuCrS₂ and CuCrSe₂. The vertical ferroelectricity is neither induced by an empty d shell nor spin-driven, giving rise to an alternative possibility of resolving those intrinsic exclusions and contradictions. Compared with their bulk phases, the ferromagnetism in the thin-layer structures (two-six layers) can be greatly stabilized due to the enhanced carrier de

SUBMITTER: Zhong T 

PROVIDER: S-EPMC8288967 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature