ISIS Neutron and Muon Source Data Journal

muSR study of oxy-pnictide superconductor approaching to a possible quantum critical point

Abstract: Many relevant hints on the superconducting properties of a family compound can be derived from the behavior of the temperature and/or doping dependence of the superfluid density. Here we propose a transverse field muon spin rotation investigation of the superconducting properties of the optimally F doped La(1-􀀀x)Y(x)Fe(0.995)Mn(0.005)AsO(0.89)F(0.11) compound. In this system the substitution of La by the isoelectronic Y gradually increases the superconducting transition Tc from zero to about 30 K in the range 0 < x < 0.3. The aim is to measure the superfluid density, via the analysis of the muon linewidth, while Tc is increased. This will help to elucidate the behavior of the superfluid density in the oxypnictide superconductors and to clarify the presence of an expected quantum critical point.

Principal Investigator: Professor Samuele Sanna
Local Contact: Dr Pabitra Biswas
Experimenter: Professor Pietro Carretta
Experimenter: Dr Matteo Moroni
Experimenter: Dr Giacomo Prando
Experimenter: Dr Sabine Wurmehl
Experimenter: Miss Rhea Kappenberger
Local Contact: Dr Peter Baker
Experimenter: Dr Franziska Hammerath

DOI: 10.5286/ISIS.E.RB1520199

ISIS Experiment Number: RB1520199

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:
Professor Samuele Sanna et al; (2015): muSR study of oxy-pnictide superconductor approaching to a possible quantum critical point, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1520199

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