Magnetic structure and spin correlations in magnetoelectric honeycomb Mn4Ta2O9

Magnetic structure of the magnetoelectric material Ca2CoSi2O7

Power-law spin correlations in a perturbed spin model on a honeycomb lattice.

We consider the spin-1/2 model on the honeycomb lattice in the presence of a weak magnetic field hα << 1. Such a perturbation destroys the exact integrability of the model in terms of gapless fermions and static Z2 fluxes. We show that it results in the appearance of a long-range tail in the irreducible dynamic spin correlation function: <> ∝ h(z)(2)f(t,r), where f(t,r) ∝ [m...

MAGNETIC SPIN VALVE WITH A MAGNETOELECTRIC ELEMENT: US Patent 7,358,846

Magnetoelectric interfaces and spin transport.

Engineered heterostructures designed for electric control of magnetic properties, the so-called magnetoelectric interfaces, present a novel route towards using the spin degree of freedom in electronic devices. Here, we review how a subset of such interfaces, namely ferromagnet-ferroelectric heterostructures, display electronically mediated control of magnetism and, in particular, emphasis is pl...

Spin-correlations and magnetic structure in an Fe monolayer on 5d transition metal surfaces.

We present a detailed first principles study on the magnetic structure of an Fe monolayer on different surfaces of 5d transition metals. We use the spin-cluster expansion technique to obtain parameters of a spin model, and predict the possible magnetic ground state of the studied systems by employing the mean field approach and, in certain cases, by spin dynamics calculations. We point out that...