Incorporation of the secondary oxide phase into manganite composite capable enhancing low-field magnetoresistance (LFMR) for viability in high-performance spintronic applications. Polycrystalline La0.67Ca0.33MnO3 (LCMO) was prepared via sol–gel route this study. The structural, microstructural, magnetic, electrical, and magneto-transport properties (1−x) LCMO: x NiO, = 0.00, 0.05, 0.10, 0.15 0....

We perform self-consistent studies of two-dimensional (2D) s-wave topological superconductivity (TSC) with Rashba spin-orbit coupling and Zeeman field by solving the Bogoliubov-de Gennes equations. In particular, we examine the effects of a nonmagnetic impurity in detail and show that the nature of the spin-polarised midgap bound state varies significantly depending on the material parameters. ...

Based on an inverted bulk band order, antimony thin films presumably could become topological insulators if quantum confinement effect opens up a gap in the bulk bands. Coupling between topological surface states (TSS) from opposite surfaces, however, tends to degrade or even destroy their novel characters. Here the evolution and coupling of TSS on Sb(111) thin films from 30 bilayers down to 4 ...

The advent of new imaging technologies in Scanning Electron Microscopy (SEM) using low energy (0-2 keV) electrons has brought about new ways to study materials at the nanoscale. It also brings new challenges in terms of understanding electron transport at these energies. In addition, reduction in energy has brought new contrast mechanisms producing images that are sometimes difficult to interpr...

Applications of the classical flipping ratio technique to the determination of the spin density by polarised neutron diffraction (PND) are described. In the domain of molecule-based magnetic compounds, such investigations provide direct information on the nature and the origin of the intraand inter-molecular magnetic interactions. For instance, the visualisation of the spin distribution in the ...

Polarised neutron and X-ray diffraction experiments have been performed on Ni(NHj^CNC^) 2 t o study respectively the spin and charge distributions in the molecule. The results have been compared with an ab-initio M.O. calculation. 27 % of the spin is transferred to the ligand atoms by covalent interactions. A simple ligand field model, with four empirical parameters, agrees qualitatively, but n...

We investigate spin correlations in the dipolar Heisenberg antiferromagnet Gd2Sn2O7 using polarised neutron-scattering measurements in the correlated paramagnetic regime. Using Monte Carlo methods, we show that our data are sensitive to weak further-neighbour exchange interactions of magnitude  ∼0.5% of the nearest-neighbour interaction, and are compatible with either antiferromagnetic next-nea...