ISIS Neutron and Muon Source Data Journal

Detecting Weyl Fermions in NbAs via Neutron Scattering

Abstract: Materials that break either inversion or time reversal symmetry but not both symmetries can have protected linear band crossings with locked momentum and spin. The quasi-particles such states are described by the Weyl hamiltonian. Weyl fermions are distinguished by being their own anti-particle and while no fundamental Weyl fermion has been identified thus far, there are materials in which Weyl fermions dominate transport and thermodynamic properties. ARPES has established TaAs and NbAs as examples of so-called Weyl semi-metals. Here we propose a neutron scattering experiment to probe Weyl fermions in NbAs through neutron scattering. We had previously been awarded beam time for this experiment in TaAs but for logistical reasons we have had do change the sample to NbAs. Otherwise the experiment is identical to the previously approved TaAs proposal.

Principal Investigator: Professor Collin Broholm
Local Contact: Dr Toby Perring
Experimenter: Dr Jonathan Gaudet
Experimenter: Mr Youzhe Chen

DOI: 10.5286/ISIS.E.RB1900018

ISIS Experiment Number: RB1900018

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
Select the data format above to find out more about it.

Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Collin Broholm et al; (2018): Detecting Weyl Fermions in NbAs via Neutron Scattering, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1900018

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