ISIS Neutron and Muon Source Data Journal

: Investigation of collective magnetic excitations in Kondo insulator: CeFe2Al10

Abstract: : Recently the Kondo insulators CeT2Al10 (T=Fe, Ru and Os) have attracted considerable attention. T=Ru and Os order AFM below 29 K, while T=Fe remains paramagnetic. At low temperature, CeFe2Al10 reveals an opening of a small energy gap in the electronic density of states near Fermi-energy. We have investigated the magnetic excitations in CeT2Al10 (T=Fe, Ru and Os) compounds using MERLIN (see Ref.10). We have also developed an ab-initio theoretical framework using three tier quasi-particle self consistent GW (QSGW)+ dynamical mean field theory (DMFT)+ solution of Bethe Salpeter equations (BSE) to compute vertex corrected spin fluctuation spectrum in CeFe2Al10. We have very good data in the ab-plane, however the data along [0 0 L] are not enough to make direct comparison with the theory. We therefore propose to investigate a detailed excitations along [0 0 L] in CeFe2Al10 on MERLIN.

Local Contact: Dr Devashi Adroja
Experimenter: Professor Mark van Schilfgaarde
Experimenter: Dr Yuji Muro
Experimenter: Dr Swagata Acharya
Experimenter: Dr Helen Walker
Experimenter: Professor Toshiro Takabatake

DOI: 10.5286/ISIS.E.RB1920755

ISIS Experiment Number: RB1920755

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 Devashi Adroja et al; (2019): : Investigation of collective magnetic excitations in Kondo insulator: CeFe2Al10, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1920755

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