ISIS Neutron and Muon Source Data Journal

Paramagnetic excitations in the topological Weyl semimetal Co3Sn2S2

Abstract: In a magnetic Weyl semimetal (WSM) with broken time-reversal symmetry, large intrinsic anomalous Hall effect is expected if the Weyl nodes are close to Fermi energy, which mostly depends on the orbital magnetism from itinerant electrons. Recently, a layered Kagomé-lattice half-metal Co3Sn2S2 with Weyl points near Fermi energy and a ferromagnetic transition around 175 K, is discovered to be an ideal ferromagnetic WSM. Our previous results on triple-axis spectrometer and time-of-flight spectrometer Merlin (RB1820002) helped us clear the three-dimensional spin exchange coupling and its spectrum of spin waves. Here we propose to do more temperature dependent measurements on the same sample measured on Merlin. The aim is to further understand the temperature evolution of the spin excitations in Co3Sn2S2 and its connection with the non-monotonic temperature dependence of anomalous Hall angle.

Principal Investigator: Dr Hui-Qian Luo
Experimenter: Dr Enke Liu
Experimenter: Miss Chang Liu
Local Contact: Dr Devashi Adroja

DOI: 10.5286/ISIS.E.RB1920310

ISIS Experiment Number: RB1920310

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Hui-Qian Luo et al; (2019): Paramagnetic excitations in the topological Weyl semimetal Co3Sn2S2, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1920310

Data is released under the CC-BY-4.0 license.