Publications (10)
Scaling of the spin Seebeck effect in bulk and thin film
K. Morrison, A. J Caruana, C. Cox
Whilst there have been several reports of the spin Seebeck effect to date, comparison of the absolute voltage(s) measured, in particular for thin films, is limited. In this letter…
Emergence of a hidden magnetic phase in LaFe11.8Si1.2 investigated by inelastic neutron scattering as a function of field and temperature
K. Morrison, J. J. Betouras, G. Venkat +5
The NaZn13 type itinerant magnet LaFe13-xSix has seen considerable interest due to its unique combination of large magnetocaloric effect and low hysteresis. Here we demonstrate, wi…
Evidence for Nodal superconductivity in SrScFePO
K. A. Yates, I. T. M. Usman, K. Morrison +6
Point contact Andreev reflection spectra have been taken as a function of temperature and magnetic field on the polycrystalline form of the newly discovered iron-based superconduct…
Microstructural control and tuning of thermal conductivity in La0.67Ca0.33MnO3+/-δ
J. A. Turcaud, K. Morrison, A. Berenov +3
Manganites are one of only a small number of material families currently being trialled as room temperature magnetic refrigerants. Here we examine the dependence of the thermal con…
Spin Seebeck effect and magnon diffusion length in
G. Venkat, C. D. W. Cox, D. Voneshen +4
The determination of the magnon diffusion length (MDL) is important for increasing the efficiency of spin Seebeck effect (SSE) based devices utilising non-metallic magnets. We extr…
A DC magnetic metamaterial
F. Magnus, B. Wood, J. Moore +7
Electromagnetic metamaterials are a class of materials which have been artificially structured on a subwavelength scale. They are currently the focus of a great deal of interest be…
Flux-dynamics associated with the Second Magnetisation Peak in iron-pnictide Ba_{1-x}K_xFe_2As_2
S. Salem-Sugui, L. Ghivelder, A. D. Alvarenga +7
We report on isofield magnetic relaxation data on a single crystal of with superconducting transition temperature = 32.7 K which exhibit the so called fi…
Measurement of the heat flux normalised spin Seebeck coefficient of thin films as a function of temperature
G. Venkat, C. D. W. Cox, A. Sola +2
The spin Seebeck effect (SSE) has generated interest in the thermoelectric and magnetic communities for potential high efficiency energy harvesting applications, and spintronic com…
Effect of columnar defects on the pinning properties of NdFeAsO0.85 conglomerate particles
J. D. Moore, L. F. Cohen, Y. Yeshurun +12
Oxypnictide superconductor NdFeAsO0.85 sample was irradiated with 2 GeV Ta ions at a fluence of 5x10^10 ions/cm2. High resolution transmission electron microscopy study revealed th…
Investigation of Superconducting Gap Structure in TbFeAsOF using Point Contact Andreev Reflection
K. A. Yates, K. Morrison, Jennifer A Rodgers +4
Bulk samples of TbFeAsOF (T(on) = 50K) were measured by point contact Andreev reflection spectroscopy. The spectra show unambiguous evidence for multiple gap-…