ISIS Neutron and Muon Source Data Journal

Dirac Point and Topological Triplon Bands in the Shastry-Sutherland Material SrCu2(BO3)2

Abstract: SrCu$_2$(BO$_3$)$_2$ (SCBO) is a very much studied quantum magnet that is most well known for its ground state of coupled singlets and multiple magnetization plateaux. Recently, a group of theorists proposed that in the little studied low field regime, SCBO is a magnetic relative of the celebrated topological insulators. To our knowledge, this is the first proposed case of a topological band structure in a magnetic insulating material. Our experimental proposal is intended to make progress towards establishing whether this theoretical picture is correct. The first part of the experiment is to use inelastic neutron scattering to investigate the magnetic excitations in small field where we expect to observe a band gap opening in a field and closing again at a Dirac point. In the second part a simultaneous Raman experiment will correlate the bulk Raman signal with the neutron measurements.

Principal Investigator: Professor Stewart Parker
Experimenter: Professor Tony Parker
Experimenter: Dr Tatiana Guidi
Experimenter: Dr Dharmalingan Prabhakaran
Local Contact: Dr David Voneshen
Experimenter: Dr Paul McClarty

DOI: 10.5286/ISIS.E.RB1610527

ISIS Experiment Number: RB1610527

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 Stewart Parker et al; (2016): Dirac Point and Topological Triplon Bands in the Shastry-Sutherland Material SrCu2(BO3)2, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1610527

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