ISIS Neutron and Muon Source Data Journal

Strange metal behaviour and spin fluctuations in overdoped La2-xSrxCuO4

Abstract: Above their transition temperature Tc, cuprate superconductors are metals. However, the conduction electrons show very anomalous behavior compared to other metals. E.g. the resistivity is proportion to temperature (T). We believe that this "strange" behavior is connected to spin fluctuations with energies comparable to T. These spin fluctuations may scatter the conduction electrons and change (scale) in a special way with T and be connected to strange T-dependence of the resistivity. We have recently identified very low-energy (~4 meV) overdamped spin fluctuations in normal state of La2-xSrxCuO4 (x=0.22) for T close to Tc. Here we propose to measure how these excitations change with T We will compare our results to theories of magnetic quantum criticality. The results will shed light on the nature of electrons which carry charge in the cuprates.

Principal Investigator: Professor Stephen Hayden
Experimenter: Mr Jacopo Radaelli
Local Contact: Dr Ross Stewart
Experimenter: Mr Charles Tam

DOI: 10.5286/ISIS.E.RB2220248

ISIS Experiment Number: RB2220248

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 Stephen Hayden et al; (2022): Strange metal behaviour and spin fluctuations in overdoped La2-xSrxCuO4, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2220248

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