Russell
Ewings
No
No
No
Yes

​​At ISIS I am the leader of the Excitations group leader. The Excitations group operates the LET, MERLIN, MARI and MAPS spectrometers.

I have a long-standing interest in the development of software for analysis and visualisation of data from time-of-flight chopper spectrometers​, specifically the Horace software package. You can read more about the software, and the technique of collecting four-dimensional inelastic neutron scattering datasets, here:

"Horace: Software for the analysis of data from single crystal spectroscopy experiments at time-of-flight neutron instruments", Nucl. Inst. Meth. 834, 132-142 (2016)​

I am also interested in finding new ways of improving the capabilities of the spectrometers in the excitations group, e.g. with improved neutron optics, as well as developing novel sample environment for experiments. An example of the latter is the work done by Richard Waite, whom I co-supervise at Bristol University with Prof. Stephen Hayden, on devices that can apply uniaxial strain to samples being studied with neutron beams. ​On the former, I was responsible for the 2017/18 upgrade to the MAPS spectrometer, which you can read about here: 

"Upgrade to the MAPS neutron time-of-flight chopper spectrometer", Rev. Sci. Inst. 90, 035110 (2019)


Scientifically I am interested in the physics of strongly correlated transition metal oxides, which exhibit all manner of interesting emergent properties such as superconductivity or multiferroicity. I co-supervise Harry Lane at the University of Edinburgh, jointly with Dr. Chris Stock, on projects to marry advanced theoretical modelling of such materials with neutron scattering data.

​The following selected ​papers provide some examples of my research:

"The full magnon spectrum of yttrium iron garnet", NJP Quantum Materials 2, 63 (2017)​​​

"Solitary Magnons in the S=5/2 Antiferromagnet CaFe2O4", Phys. Rev. Lett. 117, 017201 (2016)

“Spin resonance in the superconducting state of Li1-xFexODFe1-ySe observed by neutron spectroscopy”, Phys. Rev. B 94, 144503 (2016)

"Spin excitations used to probe the nature of exchange coupling in the magnetically ordered ground state of Pr0.5Ca0.5MnO3", Phys. Rev. B 94, 014405 (2016)​

"Strong (pi,0) spin fluctuations in beta-FeSe observed by neutron spectroscopy", Phys. Rev. B 91, 180501 (2015)

"Spin fluctuations away from (pi,0) in the superconducting phase of molecular-intercalated FeSe", Phys. Rev. B 87, 220508 (2013)

"Spin-wave excitations and superconducting resonant mode in CsxFe2-ySe2", Phys. Rev. B 86, 094528 (2012)

"Magnetic structure of DyMn2O5 determined by resonant x-ray scattering", Phys. Rev. B 85, 224403 (2012)

"Antiferromagnetic spin fluctuations in LiFeAs observed by neutron scattering", Phys. Rev. B 83, 220514(R) (2011)

"Itinerant Spin Excitations in SrFe2As2 Measured By Inelastic Neutron Scattering", Phys. Rev. B 83, 214519 (2011)

"High-energy spin excitations in BaFe2As2 observed by inelastic neutron scattering", Phys. Rev. B 78, 220501(R) (2008)

"X-ray Resonant Diffraction Study of Multiferroic DyMn2O5", Phys Rev B 77, 104415 (2008)

"Nature of the Magnetic Order in the Charge-Ordered Cuprate La1.48Nd0.4Sr0.12CuO4", Phys Rev Lett 98, 197003 (2007)

"X-ray Scattering Study of the Order Parameters in Multiferroic TbMnO3", Phys Rev B 76, 184420 (2007)