Giant anomalous transverse transport properties of Co-doped two-dimensional Fe 3GaTe 2
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
xGaTe
2 (
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
0.083GaTe
2 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
0.33GaTe
2 systems, respectively. We find a giant anomalous Nernst conductivity (ANC) of 6.03 A/(K·m) in the monolayer Fe
2.917Co
0.083GaTe
2 at ?30 meV, and this is further enhanced to 11.30 A/(K·m) in the bilayer Fe
2.917Co
0.083GaTe
2 at ?20 meV. Moreover, the bilayer Fe
2.917Co
0.083GaTe
2 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
xGaTe
2 (
x = 0.083, 0.167, 0.250, and 0.330) structures have better anomalous transverse transport performance than the pristine Fe
3GaTe
2 system and can be used for potential spintronics and spin caloritronics applications.
two-dimensional (2D) material、Fe 3GaTe 2、ferromagnetism、magnetic anisotropy、Curie temperature、anomalous Hall conductivity、anomalous Nernst conductivity、anomalous thermal Hall conductivity
19
2024-09-26（万方平台首次上网日期，不代表论文的发表时间）
共1页
63206
