Three-dimensional ferromagnetism and magnetotransport in van der Waals Mn-intercalated tantalum disufide

Abstract

Van der Waals (vdW) ferromagnets are an important class of materials for spintronics applications. The recent discovery of atomically vdW magnets CrI${}_3$ and Cr${}_2$Ge${}_2$Te${}_6$ has triggered a renaissance in the area of two-dimensional (2D) magnetism. Herein we systematically studied 2H-Mn${}_{0.28}$TaS${}_2$ single crystal, a 2D vdW ferromagnet with $T_c$ $\sim$ 82.3 K and a large in-plane magnetic anisotropy. Mn $K$-edge x-ray absorption spectroscopy was measured to provide information on its electronic state and local atomic environment. The detailed magnetic isotherms measured in the vicinity of $T_c$ indicates that the spin coupling inside 2H-Mn${}_{0.28}$TaS${}_2$ is of a three-dimensional (3D) Heisenberg-type coupled with the attractive long-range interaction between spins that decay as $J(r)\approx r^{-4.85}$. Both resistivity $\rho (T)$ and thermopower $S(T)$ exhibit anomalies near $T_c$, confirming that the hole-type transport carriers strongly interact with local moments. An unusual angle-dependent magnetoresistance is further observed, suggesting a possible field-induced novel magnetic structure.

References in corpus (7)

• 2D materials and van der Waals heterostructures
• Ising-Type Magnetic Ordering in Atomically Thin FePS3
• Tuning Electronic and Magnetic Properties of Early Transition Metal Dichalcogenides via Tensile Strain
• Tricritical behavior of two-dimensional intrinsic ferromagnetic semiconducting CrGeTe3
• Critical behavior of quasi-two-dimensional semiconducting ferromagnet CrGeTe${}_3$
• Very large magnetoresistance in Fe${}_{0.28}$TaS${}_2$ single crystals
• Unusual ferromagnetic critical behavior owing to short-range antiferromagnetic correlations in antiperovskite Cu1-xNMn3+x(0.1<x<0.4)

Cited by in corpus (2)

• Electrical and thermal transport in van der Waals magnets 2H-M${}_x$TaS${}_2$ (M = Mn, Co)
• Optical fingerprints of the electronic band reconstruction in van der Waals magnetic materials