CoB6 monolayer: A robust two-dimensional ferromagnet

Article

关键词: ROOM-TEMPERATURE FERROMAGNETISM;    GLOBAL MINIMUM;    CRYSTAL;    MAGNETISM;    IRON;   

DOI  :  10.1103/PhysRevB.99.045445

来源: SCIE

【 摘 要 】

Two-dimensional (2D) magnetic materials are essential to developing high-performance spintronic devices. Recent experimental discoveries of several atomic thin 2D ferromagnetic materials have stimulated great interest in further exploring this fascinating class of materials. Here, combining an advanced crystal structure search method and extensive first-principles energetic and dynamic calculations, we have identified a planar CoB6 monolayer as a stable 2D ferromagnet. We show that the ferromagnetic ground state of the CoB6 monolayer remains robust in the ambient environment, and the magnetic stability and moment can be remarkably enhanced and tuned by external strain. Moreover, we propose feasible synthesis routes for the the newly predicted CoB6 monolayer, either by Co atom adsorption on the recently proposed delta(4) boron sheet or by direct chemical growth. The present results establish a fundamental material and physics basis for synthesis and characterization of the CoB6 monolayer among the emerging 2D ferromagnetic materials.

【 授权许可】

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