In spintronics, transverse anomalous transport properties have emerged as a highly promising avenue surpassing the conventional longitudinal transport behaviors. Here, we explore the transverse transport properties of monolayer and bilayer Fe_3−xCo_xGaTe₂ (x = 0.083, 0.167, 0.250, and 0.330) systems. All the systems exhibit ferromagnetic ground states with metallic features and also have perpendicular magnetic anisotropy. Besides, the magnetic anisotropy is substantially enhanced with increasing Co-doping concentration. However, unlike magnetic anisotropy, the Curie temperature is suppressed by increasing the Co-doping concentration. For instance, the monolayer and bilayer Fe_2.917Co_0.083GaTe₂ hold a Curie temperature of 253 K and 269 K, which decreases to 163 K and 173 K in monolayer and bilayer Fe_2.67Co_0.33GaTe₂ systems, respectively. We find a giant anomalous Nernst conductivity (ANC) of 6.03 A/(K·m) in the monolayer Fe_2.917Co_0.083GaTe₂ at −30 meV, and this is further enhanced to 11.30 A/(K·m) in the bilayer Fe_2.917Co_0.083GaTe₂ at −20 meV. Moreover, the bilayer Fe_2.917Co_0.083GaTe₂ structure has a large anomalous thermal Hall conductivity (ATHC) of −0.14 W/(K·m) at 100 K. Overall, we find that the Fe_3−xCo_xGaTe₂ (x = 0.083, 0.167, 0.250, and 0.330) structures have better anomalous transverse transport performance than the pristine Fe₃GaTe₂ system and can be used for potential spintronics and spin caloritronics applications.

在自旋电子学中，横向异常输运特性已成为超越传统纵向输运行为的非常有前途的途径。在这里，我们探讨了单层和双层 Fe _3−x Co _x GaTe ₂ （x = 0.083、0.167、0.250 和 0.330）系统的横向传输特性。所有系统都表现出具有金属特征的铁磁基态，并且还具有垂直磁各向异性。此外，随着Co掺杂浓度的增加，磁各向异性显着增强。然而，与磁各向异性不同，居里温度通过增加Co掺杂浓度来抑制。例如，单层和双层 Fe _2.917 Co _0.083 GaTe ₂ 的居里温度分别为 253 K 和 269 K，随后降至 163 K 和 173 K分别在单层和双层 Fe _2.67 Co _0.33 GaTe ₂ 体系中。我们发现单层 Fe _2.917 Co _0.083 GaTe ₂ 在−30 meV 时具有 6.03 A/(K·m) 的巨大反常能斯特电导率 (ANC) ，并且在 -20 meV 的双层 Fe _2.917 Co _0.083 GaTe ₂ 中进一步增强至 11.30 A/(K·m)。此外，双层Fe _2.917 Co _0.083 GaTe ₂ 结构在高温下具有-0.14 W/(K·m)的大反常霍尔热导率(ATHC)。 100 K。总体而言，我们发现 Fe _3−x Co _x GaTe ₂ (x = 0.083、0.167、0.250 和 0.330) 结构具有更好的反常横向传输性能优于原始 Fe ₃ GaTe ₂ 系统，可用于潜在的自旋电子学和自旋热电子学应用。