The generation of nonequilibrium electron spin polarization, transport, and detection are fundamental in many quantum devices. We demonstrate that a lattice magnetic nanodots enhances the polarization monolayer graphene via carrier exchange. probed through resistively detected variant resonance observed amplification mediated by presence nanodots. Each nanodot locally injects surplus spin-polar...

We studied the effect of disorder on superconducting vortex pinning produced by arrays of artificial pinning sites. The magnetoresistance of samples with pinning configurations varying from a triangular array to an almost random distribution of pinning sites provides a controlled system for such studies. Interestingly even small degrees of order are sufficient to produce enhanced pinning at wel...

Spin-dependent Electron Transport in NanomagneticThin Film Devices

Control of the spin wave dynamics in nanomagnetic elements is very important for realization a broad range novel magnonic devices. Here we study experimentally resonance thick ferromagnetic rings (100 nm) using perpendicular spectroscopy. Different from what was observed continuous film same thickness, or with similar lateral dimensions but lower thicknesses, spectra patterned show nonmonotonic...

The thermodynamic properties of a spatially anisotropic spin-1/2 Heisenberg model for Cu$_5$ pentameric molecule is studied through exact diagonalization. elementary geometry the finite lattice defined on nanomolecules consisting an hourglass structure two corner-sharing scalene triangles which are related by inversion symmetry. This microscopic magnetic quite suitable to describe molecular nan...