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Intrinsic Anomalous Hall Effect in Ni-Substituted Magnetic Weyl Semimetal Co(3)Sn(2)S(2)

[Image: see text] Topological Weyl semimetals have recently attracted considerable attention among materials scientists as their properties are predicted to be protected against perturbations such as lattice distortion and chemical substitution. However, any experimental proof of such robustness is...

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Detalles Bibliográficos
Autores principales: Thakur, Gohil S., Vir, Praveen, Guin, Satya N., Shekhar, Chandra, Weihrich, Richard, Sun, Yan, Kumar, Nitesh, Felser, Claudia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7045698/
https://www.ncbi.nlm.nih.gov/pubmed/32116410
http://dx.doi.org/10.1021/acs.chemmater.9b05009
Descripción
Sumario:[Image: see text] Topological Weyl semimetals have recently attracted considerable attention among materials scientists as their properties are predicted to be protected against perturbations such as lattice distortion and chemical substitution. However, any experimental proof of such robustness is still lacking. In this study, we experimentally demonstrate that the topological properties of the ferromagnetic kagomé compound Co(3)Sn(2)S(2) are preserved upon Ni substitution. We systematically vary the Ni content in Co(3)Sn(2)S(2) single crystals and study their magnetic and anomalous transport properties. For the intermediate Ni substitution, we observe a remarkable increase in the coercive field while still maintaining significant anomalous Hall conductivity. The large anomalous Hall conductivity of these compounds is intrinsic, consistent with first-principles calculations, which proves its topological origin. Our results can guide further studies on the chemical tuning of topological materials for better understanding.