ISIS Neutron and Muon Source Data Journal

Magnetic excitations of heavily electron overdoped BaFe0.8Ni1.2As2

Abstract: We have devoted much efforts to investigating the doping evolution of the magnetic excitations in electron doped BaFe2-xNixAs2 (x=0-0.6). Spin excitations for x=0-0.6 have been well studied. Though new discoveries such as spin excitation hardening and spectra weight decrease have been made in x=0.6, two issues remain to be explored experimentally by measuring higher doping. First, the spin gap size does not change from x=0.3 to 0.6, which is inconsistent with Fermi surface nesting picture and needs to be investigated. Second, since the decrease of the local susceptibility with doping is very slow, the effect of electron doping on the spin state of Fe needs to be investigated at much higher doping. Therefore, we propose to address the above issues by studying a much higher doping (x=1.2) using time-of-flight neutron scattering at MAPS, where we measured our x=0, 0.3 and 0.6 samples.

Principal Investigator: Dr Xingye Lu
Experimenter: Mr Jiaji Li
Experimenter: Mr Ding Hu
Local Contact: Dr Toby Perring
Experimenter: Ms Panpan Liu
Experimenter: Dr Long Tian

DOI: 10.5286/ISIS.E.RB1820494

ISIS Experiment Number: RB1820494

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 Xingye Lu et al; (2018): Magnetic excitations of heavily electron overdoped BaFe0.8Ni1.2As2, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1820494

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