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

Journal Article · · Physical Review B
 [1];  [2];  [3];  [4];  [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States); ALBA Synchrotron Light Source, Barcelona (Spain)

Van der Waals (vdW) ferromagnets are an important class of materials for spintronics applications. The recent discovery of atomically vdW magnets CrI3 and Cr2Ge2Te6 has triggered a renaissance in the area of two-dimensional (2D) magnetism. Herein we systematically studied 2H-Mn0.28TaS2 single crystal, a 2D vdW ferromagnet with Tc ~ 82.3K, 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 Tc indicates that the spin coupling inside 2H-Mn0.28TaS2 is of a 3D Heisenberg type coupled with the attractive long-range interaction between spins that decay as J(r) ≈ r–4.85. Both resistivity ρ(T) and thermopower S(T) exhibit anomalies near Tc, confirming that the hole-type transport carriers strongly interact with local moments. Furthermore, an unusual angle-dependent magnetoresistance is further observed, suggesting a possible field-induced novel magnetic structure.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
Grant/Contract Number:
SC0012704
OSTI ID:
1787822
Report Number(s):
BNL--221604-2021-JAAM
Journal Information:
Physical Review B, Journal Name: Physical Review B Journal Issue: 14 Vol. 103; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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