ISIS Neutron and Muon Source Data Journal

Investigation of Jahn-Teller assisted polaron collapse beyond the percolation threshold in a colossal magneto-resistance manganite

Abstract: Polaron-mediated colossal magneto-resistance (CMR) was predicted decades ago but never been experimentally established unambigously, despite the 'universal' existence of polarons in perovskite manganites. The CMR effects observed so far appear to be cause by percolative conducting path formation in magnetic field. Polarons dominate the physics on a different spatial scale to percolative domains; the resultant CMR effect may happen on a different energy scale as well. Since adding a second tunable state to a storage device increases its capacity drastically, a separate polaron-mediated CMR state is greatly desired. By carefully tailoring our material, for the first time we managed to distinguish the polaron collapse at a field much higher than the percolative threshold. We ask for time on WISH to verify the role of Jahn-Teller distortion in polaron-mediated CMR.

Principal Investigator: Professor Elizabeth Blackburn
Experimenter: Mr Lingjia Shen
Local Contact: Dr Pascal Manuel
Experimenter: Mr Erik Jellyman

DOI: 10.5286/ISIS.E.RB1520322

ISIS Experiment Number: RB1520322

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 Elizabeth Blackburn et al; (2015): Investigation of Jahn-Teller assisted polaron collapse beyond the percolation threshold in a colossal magneto-resistance manganite, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1520322

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