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First-principles investigation of ScX2 (X = Cl, Br, or I) monolayers for flexible spintronic and electronic applications

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Abstract

Two-dimensional (2D) nanomaterials with multiple characteristics are potential candidates as nanodevices for various applications. Herein, a family of 2D ScX2 (X = Cl, Br, or I) monolayers with functional properties are theoretically proposed to investigate their potential applications in spintronics and electronics. We show that these new nanomaterials possess ferromagnetic and semiconducting properties. The ScX2 monolayers hold intrinsic magnetism, which is ascribed to the ionic interaction between the Sc and X atoms. The magnetism is robust under repeated applied strains, which make them promising as flexible spintronic materials. Furthermore, we demonstrate that the ScX2 monolayers present semiconducting features and ultra-mobile carrier mobilities (∼103 cm2 V−1 s−1) benefited from their small deformation potentials. The carrier mobilities of the ScX2 monolayers are comparable with or more mobile than those of most 2D nanomaterials, which make them potential candidates as high-performance electronics. Our results suggest that the ScX2 monolayers may find various applications in flexible spintronics and electronics.

Graphical abstract: First-principles investigation of ScX2 (X = Cl, Br, or I) monolayers for flexible spintronic and electronic applications

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Supplementary files

Article information


Submitted
25 Apr 2020
Accepted
10 Jun 2020
First published
11 Jun 2020

Phys. Chem. Chem. Phys., 2020, Advance Article
Article type
Paper

First-principles investigation of ScX2 (X = Cl, Br, or I) monolayers for flexible spintronic and electronic applications

W. Chen, X. Chen, Y. Wu, G. Liu and H. Pan, Phys. Chem. Chem. Phys., 2020, Advance Article , DOI: 10.1039/D0CP02222E

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