Optical Excitation and Probing of Antiferromagnetic Modes with Nonuniform-in-depth Distribution in Birefringent Antiferromagnetic Crystals

Optical Properties of Antiferromagnetic/Ion- Crystalic Photonic Crystals

Asymmetric reversal modes in ferromagnetic/antiferromagnetic multilayers.

Experimentally an asymmetry of the reversal modes has been found in certain exchange bias systems. From a numerical investigation of the domain state model evidence is gained that this effect depends on the angle between the easy axis of the antiferromagnet and the applied magnetic field. Depending on this angle the ferromagnet reverses either symmetrically, e.g., by a coherent rotation on both...

Control of antiferromagnetic domain distribution via polarization-dependent optical annealing

The absence of net magnetization inside antiferromagnetic domains has made the control of their spatial distribution quite challenging. Here we experimentally demonstrate an optical method for controlling antiferromagnetic domain distributions in MnF2. Reduced crystalline symmetry can couple an order parameter with non-conjugate external stimuli. In the case of MnF2, time-reversal symmetry is m...

Rotational modes in molecular magnets with antiferromagnetic Heisenberg exchange

In an effort to understand the low temperature behavior of recently synthesized molecular magnets we present numerical evidence for the existence of a rotational band in systems of quantum spins interacting with nearest-neighbor antiferromagnetic Heisenberg exchange. While this result has previously been noted for ring arrays with an even number of spin sites, we find that it also applies for r...

Antiferromagnetic noise correlations in optical lattices

G. M. Bruun, O. F. Syljuåsen, K. G. L. Pedersen, B. M. Andersen, E. Demler, and A. S. Sørensen Niels Bohr International Academy, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark Mathematical Physics, Lund Institute of Technology, P.O. Box 118, SE-22100 Lund, Sweden Department of Physics, University of Oslo, P.O. Box 1048, Blindern, N-0316 Oslo, Norway Niels Bohr Institute, University of ...