ISIS Neutron and Muon Source Data Journal

High energy spin fluctuations in YFe2Ge2

Abstract: The newly discovered superconductor YFe2Ge2 (Tc about 1.8K) has the same crystal structure as 122 iron-based superconductors. While no static magnetic orders has been reported, our recent triple-axis experiment revealed strong spin fluctuations at Q=(1,0,1), corresponding to a stripe antiferromagnetic correlation consistent with in the 122 systems. Thus, there comes a contradiction between the similarity to 122 systems and the rather low Tc in YFe2Ge2. In order to have further understanding of the superconducting mechanism of this compound, we propose an experiment on the high energy spin fluctuations in YFe2Ge2, which will enable us to determine the effective Hamiltonian and to make a direct comparison with the 122 iron-based superconductors. Our experiment will shed some lights on the mechanism of pairing and the origin of low Tc. We request a 7 days' beam time for MERLIN.

Principal Investigator: Mr Jun Zhao
Local Contact: Dr Devashi Adroja
Experimenter: Dr Hongliang Wo
Experimenter: Dr Yu Feng
Experimenter: Dr Yao Shen

DOI: 10.5286/ISIS.E.RB1720235

ISIS Experiment Number: RB1720235

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:
Mr Jun Zhao et al; (2017): High energy spin fluctuations in YFe2Ge2, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1720235

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