ISIS Neutron and Muon Source Data Journal
This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.
High energy spin excitations in SrCo2As2
Abstract: the correlation degree in 122 iron pnictides mainly depends on the electronoccupancy of each orbital and that by doping electrons the correlation decreases monotonically. This is also suggested by ARPES results where the electronic band width of BaCo2As2 is clearlylarger than that in Ba 0.6K0.4Fe2As2. In our previous inelastic neutron scattering experiment on SrCo2As2,the (1/2,1/2) spin excitations were found to persist up to 135 meV and not to split as that in BaFe2As2 in whichtwo peaks can be clearly seen above 75 meV. This is a clue that the magnetic dispersion is indeed hardenedin SrCo2As2 as the magnetic correlation decreases. However, it is not clear whether the spin excitations will split and disperse to zone boundary at higher energ , or simply be more diffusiveand disappear at (1/2,1/2) point. Furthermeasurements on improved SrCo2As2samples are necessary.
Principal Investigator: Professor Pengcheng Dai
Local Contact: Dr Toby Perring
Experimenter: Mr Yu Li
DOI: 10.5286/ISIS.E.RB1610397
ISIS Experiment Number: RB1610397
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.79114025 | MAPS | 20 May 2019 | Download |
| 10.5286/ISIS.E.79114048 | ALF | 12 May 2019 | Download |
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:
Professor Pengcheng Dai et al; (2016): High energy spin excitations in SrCo2As2, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1610397
Data is released under the CC-BY-4.0 license.
