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.
Investigation of spin fluctuations' evolution in newly available low-Tellurium-doped FeSe single crystals
Abstract: Recently, we have grown low-tellurium-doped FeSe single crystals with concentration of Tellurium x ~ 0.15 and 0.33 successfully by the chemical vapor transport method. Our previous inelastic neutron scattering measurements have revealed strong spin fluctuations at the stripe and Néel wave vectors in FeSe, both of which are strongly coupled with nematicity. The nematic transition temperature in FeSe decreases with increasing tellurium concentration, and a nematic critical point is further proposed by transport measurements. Tc exhibits a highly unusual non-monotonic behaviour, reaching a local minimum of about 6 K at the critical tellurium concentration ~ 0.3 and displays two domes riding on the minum at x ~ 0.3. To understand these exotic phenomena, studying Fe(Te,Se) from FeSe side, i.e., with low tellurium dopant level is important. In this experiment, we propose to map out the spin fluctuation spectrum and its interplay with nematicity and superconductivity in FeSe0.67Te0.33 and FeSe0.85Te0.15. The success of the proposed experiment, combined with the previous results, will lead to a comprehensive understanding of the magnetic ground state and its relationship with nematicity and superconductivity in Fe(Te, Se) system and offer important indications on the roles of the stripe and the Néel spin fluctuations in iron chalcogenides.
Principal Investigator: Mr Jun Zhao
Experimenter: Ms Yihan Wang
Local Contact: Dr Devashi Adroja
Experimenter: Miss Hao Zhang
Local Contact: Dr Viviane Pecanha Antonio
DOI: 10.5286/ISIS.E.RB2510478
ISIS Experiment Number: RB2510478
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2510478-1 | MERLIN | 16 July 2028 | 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:
Mr Jun Zhao et al; (2025): Investigation of spin fluctuations' evolution in newly available low-Tellurium-doped FeSe single crystals, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2510478
Data is released under the CC-BY-4.0 license.
