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Title: Magnetic ground states of a model for MNb3S6 (M = Co, Fe, Ni)

Journal Article · · Physical Review Materials
ORCiD logo [1]; ORCiD logo [2];  [3]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Univ. of Rome (Italy)
  3. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Illinois, Chicago, IL (United States)

The transition-metal-intercalated dichalcogenide CoNb3S6 is a triangular antiferromagnet (AFM) that has recently been shown to exhibit a large anomalous Hall effect (AHE) below the Neel temperature, even though the response to an external field is very small. This suggests that there is an interesting magnetic structure that interacts with the electronic structure to yield the AHE, as collinear AFMs cannot exhibit a nonzero AHE. We propose a model for magnetic transition-metal-intercalated dichalcogenides and examine its ground state as a function of interaction parameters. The model exhibits transitions between planar spin spirals, nonplanar spin spirals, and a particular noncoplanar so-called 3q state. Finally, this latter state must exhibit a nonzero AHE, while the spin spirals do not.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
European Research Council (ERC); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1869058
Journal Information:
Physical Review Materials, Journal Name: Physical Review Materials Journal Issue: 2 Vol. 6; ISSN 2475-9953
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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