ISIS Neutron and Muon Source Data Journal

Low-energy spin excitations in Ni over-doped NaFe0.7Ni0.3As

Abstract: The discovery of iron-based superconductors gives a new horizon to study unconventional superconductivity. Typically iron-based superconductors can be created by doping (i.e. replace Fe ions with) Co or Ni in some parent compounds such as NaFeAs. It is believed the magnetism in these materials is strongly coupled to superconductivity. One way to probe the magnetism in these materials is to observe the spin gap by inelastic neutron scattering. Our previous experiment shows no gap for the parent compound and a spin gap at 11% Co doping (11% electron doping), however, no gap is observed at 60% electron doping, contrary to the previous characterizations. This experiment is to take a closer look to confirm the true size of the spin gap (if it exists) at 60% election doping.

Principal Investigator: Professor Pengcheng Dai
Experimenter: Miss Ruixian Liu
Experimenter: Miss Pengling Dai
Experimenter: Dr Lebing Chen
Experimenter: Miss Xiaokun Teng
Experimenter: Dr Xingye Lu
Local Contact: Dr Ross Stewart
Experimenter: Mr Tong Chen
Experimenter: Mr Yaofeng Xie

DOI: 10.5286/ISIS.E.RB2010238

ISIS Experiment Number: RB2010238

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
Select the data format above to find out more about it.

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; (2020): Low-energy spin excitations in Ni over-doped NaFe0.7Ni0.3As, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010238

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