Currently, magnetic storage devices are encountering the problem of achieving lightweight and high integration in mobile computing devices during the information age. As a result, there is a growing urgency for two-dimensional half-metallic materials with a high Curie temperature (T_C). This study presents a theoretical investigation of the fundamental electromagnetic properties of the monolayer hexagonal lattice of Mn₂X₃ (X = S, Se, Te). Additionally, the potential application of Mn₂X₃ as magneto-resistive components is explored. All three of them fall into the category of ferromagnetic half-metals. In particular, the Monte Carlo simulations indicate that the T_C of Mn₂S₃ reachs 381 K, noticeably greater than room temperature. These findings present notable advantages for the application of Mn₂S₃ in spintronic devices. Hence, a prominent spin filtering effect is apparent when employing non-equilibrium Green’s function simulations to examine the transport parameters. The resulting current magnitude is approximately 2 × 10⁴ nA, while the peak gigantic magnetoresistance exhibits a substantial value of 8.36 × 10¹⁶ %. It is noteworthy that the device demonstrates a substantial spin Seebeck effect when the temperature differential between the electrodes is modified. In brief, Mn₂X₃ exhibits outstanding features as a high T_C half-metal, exhibiting exceptional capabilities in electrical and thermal drives spin transport. Therefore, it holds great potential for usage in spintronics applications.

目前，磁存储设备面临着信息时代移动计算设备轻量化和高集成度的问题。因此，开发具有高居里温度（ T _C ）的二维半金属材料变得越来越紧迫。本研究对 Mn ₂ X ₃ (X = S、Se、Te)单层六方晶格的基本电磁特性进行了理论研究。此外，还探讨了Mn ₂ X ₃作为磁阻元件的潜在应用。它们三种都属于铁磁半金属的范畴。特别地，蒙特卡罗模拟表明Mn ₂ S _3的T _C达到381 K，明显高于室温。这些发现为Mn ₂ S ₃在自旋电子器件中的应用带来了显着的优势。因此，当采用非平衡格林函数模拟来检查输运参数时，显着的自旋过滤效应是显而易见的。产生的电流大小约为 2 × 10 ⁴ nA，而峰值巨磁阻表现出 8.36 × 10 ¹⁶ % 的实际值。值得注意的是，当改变电极之间的温差时，该器件表现出显着的自旋塞贝克效应。简而言之，Mn ₂ X ₃表现出作为高T _C半金属的突出特性，在电和热驱动自旋输运方面表现出卓越的能力。因此，它在自旋电子学应用中具有巨大的应用潜力。