Tunable magnetic coupling and high Curie temperature of two–dimensional PtBr3 via van der waals heterostructures

Xu, Xiaomin; Sun, Zhipeng; Wang, Xiaohu; Gao, Zhirui; Guan, Lixiu; Zhang, Shuo; Pu, Chang; Tao, Junguang

doi:10.1016/j.apsusc.2021.151478

Cited by 10 publications

(1 citation statement)

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“…Table 1 records the T C of monolayer VS 2 , GaN/VS 2 vdW heterostructure, and VS 2 /GaN/VS 2 spin valve, which are 292, 477, and 535 K, respectively. During the formation of heterostructures, the compatibility of the Fermi level between VS 2 and GaN allows sufficient interfacial charge transfer across the atomic interfaces between them, which enhances the Curie temperature of the heterostructures to a large extent [51][52][53].…”

Section: Resultsmentioning

confidence: 99%

Boosting the Curie temperature of GaN monolayer through van der Waals heterostructures

Wu,

Wang,

Zhi

et al. 2024

Nanotechnology

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The pursuit of van der Waals (vdW) heterostructures with high Curie temperature and strong perpendicular magnetic anisotropy is vital to the advancement of next generation spintronic devices. First-principles calculations are used to study the electronic structures and magnetic characteristics of GaN/VS2 vdW heterostructure under biaxial strain and electrostatic doping. Our findings show that a ferromagnetic ground state with a remarkable Curie temperature (477 K), much above room temperature, exists in GaN/VS2 vdW heterostructure and 100% spin polarization efficiency. Additionally, GaN/VS2 vdW heterostructure still maintains perpendicular magnetic anisotropy under biaxial strain, which is indispensable for high-density information storage. We further explore the electron, magnetic, and transport properties of VS2/GaN/VS2 vdW sandwich heterostructure, where the magnetoresistivity can reach as high as 40%. Our research indicates that the heterostructure constructed by combining the ferromagnet VS2 and the non-magnetic semiconductor GaN is a promising material for vdW spin valve devices at room temperature.

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Section: Resultsmentioning

confidence: 99%