Superexchange-Driven Magnetoelectricity in Magnetic Vortices

Superexchange-driven magnetoelectricity in magnetic vortices.

We demonstrate that magnetic vortices in which spins are coupled to polar lattice distortions via superexchange exhibit an unusually large linear magnetoelectric response. We show that the periodic arrays of vortices formed by frustrated spins on kagome lattices provide a realization of this concept; our ab initio calculations for such a model structure yield a magnetoelectric coefficient that ...

Study of Magnetic Superexchange in diluted Systems

model the covalency-mixing parameters, λσ and λπ, the electron spin transfer coefficients, ƒi (i=σ, π, s ), and the total charge, C, transferred from ligand to the chromium ions, are evaluated. The variation of bσσ and bσπ with x agree with the passage of the system from ferromagnetic to antiferromagnetic order. For the compound presenting re-entrant behaviour ( 58 . 0 45 . 0 ≤ ≤ x ), fs exhibi...

Magnetic Ordering in Gd Monopnictides: Indirect Exchange Versus Superexchange Interaction

magnetic resonance imaging in dentistry

چکیده ندارد.

Energy of Magnetic Vortices in Rotating Superconductor

Abstract. We carry out a systematic analytic investigation of stationary and cylindrically symmetric vortex configurations for simple models representing an incompressible non-relativistic superconductor in a background, which is rigidly rotating with the angular velocity Ω∞. It is shown that although the magnetic and kinetic contributions to the energy per unit length of such a vortex are sepa...