ISIS Neutron and Muon Source Data Journal

Unconventional slow spin fluctuations in Ba122 iron-based superconductors

Abstract: The iron-based superconductors are at the forefront of the research on unconventional superconductivity. The Barium-122 systems, doped with electrons, reveal a non-trivial behavior, above the superconducting transition (Tc), in nuclear magnetic resonance (NMR) relaxation times. 75As NMR spin-spin relaxation time in the normal phase of 122 iron-based superconductors shows very slow spin fluctuations, which are absent in the high temperature superconducting cuprates. Recent experiments show the presence of nematic charge fluctuations, in the same observed temperature/doping range. We thereby propose a muon spin rotation experiment to characterize the spin fluctuations, in a zero field and transverse field environment, in order to extend our previous NMR study, carried out in a broad range of magnetic fields, as well as to investigate the in-plane anisotropy of such slow dynamics.

Principal Investigator: Dr Lucia Bossoni
Experimenter: Professor Pietro Carretta
Experimenter: Dr Matteo Moroni

DOI: 10.5286/ISIS.E.RB1510430

ISIS Experiment Number: RB1510430

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 Lucia Bossoni et al; (2015): Unconventional slow spin fluctuations in Ba122 iron-based superconductors, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1510430

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