Dirac semimetallic Janus Ni-trihalide monolayer with strain-tunable magnetic anisotropy and electronic properties

Abstract

Two-dimensional (2D) ferromagnetic (FM) semiconductors have been paid much attention due to the potential applications in spintronics.

Valley polarization and magnetic anisotropy of two-dimensional Ni2Cl3I3/MoSe2 heterostructures

“…Structural optimization of the Ni 2 Cl 3 I 3 monolayer yields a lattice constant of 6.50 Å, which is in general agreement with the literature results of 6.49 Å. 17 The electronic properties of the monolayer Ni 2 Cl 3 I 3 are characterized by the electronic band structure and density of states (DOS).…”

“…15 High spin mobility and dynamically as well as thermodynamically stable behavior at high temperatures are exhibited by 2D Ni-trihalide monolayers, which also display DHM behaviour. 16 The Janus structure of Ni 2 Cl 3 I 3 as a transition metal Ni-trihalide retains the DHM behavior with an FM ground state and a Curie temperature of 105 K. 17 The breaking of mirror symmetry in transition metal trihalides through the design of Janus structures invariably leads to the emergence of new phenomena, including phase transitions, magnetism, and ferroelectricity. 18 This endows them with great potential for application across various fields, such as photodynamic heat converters, environmental monitoring and photodetection.…”

Two-dimensional multiferroic RuClF/AgBiP2S6 van der Waals heterostructures with valley splitting properties and controllable magnetic anisotropy

“…18 In addition, more 2D Janus monolayers have been predicted by density functional theory (DFT). The physical properties of Janus monolayers such as the piezoelectric phenomenon, 19,20 magnetic anisotropy, [21][22][23] Heisenberg exchange interaction 24 and quantum anomalous Hall effect 25 have all been changed significantly. Due to the high complexity of the growth mechanism, the studies of Janus monolayers, especially magnetic Janus monolayers, are mainly based on the theoretical level.…”