Publications by authors named "J G Fowlie"

Article Synopsis
  • The study explores the behavior of rare earth nickelates (RENiO) during a phase transition from metal to insulator, focusing on how electron-lattice interactions lead to bond disproportionation and spin order among nickel and ligand spins.
  • Researchers investigated a hypothesis that self-doped ligand holes create local spin moments that couple antiferromagnetically with Ni spins, leading to long-range bond and spin order, specifically in NdNiO thin films.
  • Using magnetic resonant X-ray scattering, the study found spiral spin patterns in the material that show an unexpected chiral magnetic configuration, hinting at a possible link between this noncollinear magnetic state and unusual ferroelectric characteristics.
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The quest to improve transparent conductors balances two key goals: increasing electrical conductivity and increasing optical transparency. To improve both simultaneously is hindered by the physical limitation that good metals with high electrical conductivity have large carrier densities that push the plasma edge into the ultra-violet range. Technological solutions reflect this trade-off, achieving the desired transparencies only by reducing the conductor thickness or carrier density at the expense of a lower conductance.

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The search for superconductivity in infinite-layer nickelates was motivated by analogy to the cuprates, and this perspective has framed much of the initial consideration of this material. However, a growing number of studies have highlighted the involvement of rare-earth orbitals; in that context, the consequences of varying the rare-earth element in the superconducting nickelates have been much debated. Here, we show notable differences in the magnitude and anisotropy of the superconducting upper critical field across the La-, Pr-, and Nd-nickelates.

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Thin films of the solid solution Nd1-xLaxNiOare grown in order to study the expected 0 K phase transitions at a specific composition. We experimentally map out the structural, electronic and magnetic properties as a function ofand a discontinuous, possibly first order, insulator-metal transition is observed at low temperature when= 0.2.

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Background: Throughout the ecosystem of sport, women have been and continue to be underrepresented at all levels compared to men. The capacity of community-level sport is heavily reliant on the many non-player roles including governance, as well as administration, coaching and officiating. Recently there has been increased attention to improving the gender balance in sport.

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