ISIS Neutron and Muon Source Data Journal

Exploration of possible spin-charge ordered phases in La2-xBaxCoO4 (x=1/3 and 1/2)

Abstract: This is a proposal to measure the magnetic spectrum of single crystal La2-xBaxCoO4 for the first time. The isostructural layered cobaltates with Sr and Ca instead of Ba have been studied extensively. The x=1/2 composition exhibits long-range checkerboard charge order and accompanying antiferromagnetic order, but the x = 1/3 composition is more complex. It has a nanoscale coexistence of different electronic phases, including period-3 spin-charge stripes, and has a distinctive hourglass-shaped magnetic spectrum. The Ba-doped system has not been investigated previously. Our objective is to obtain a complete mapping in energy and momentum of the magnetic spectrum of La2-xBaxCoO4 with x = 1/3 and 1/2. The results will be compared with the known spectra of La2-xSrxCoO4, and by analysing the spectra quantitatively we hope to gain a picture of the electronic ground state in these systems.

Public release date: 11 December 2022

Principal Investigator: Professor Andrew Boothroyd
Experimenter: Dr Dharmalingan Prabhakaran
Local Contact: Dr Helen Walker
Experimenter: Ms Siobhan Tobin

DOI: 10.5286/ISIS.E.RB1920499-1

Parent DOI: 10.5286/ISIS.E.RB1920499

ISIS Experiment Number: RB1920499

Part Number: 1

Date of Experiment: 06 December 2019

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 Andrew Boothroyd et al; (2019): Exploration of possible spin-charge ordered phases in La2-xBaxCoO4 (x=1/3 and 1/2), STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1920499-1