99 citations · 415 across the 9 of their papers we have counts for
9 papers
Magnetic properties of nanoscale compass-Heisenberg planar clusters
F. Trousselet, A. M. Oles, P. Horsch
We study a model of spins 1/2 on a square lattice, generalizing the quantum compass model via the addition of perturbing Heisenberg interactions between nearest neighbors, and inve…
Anisotropic optical response of the mixed-valent Mott-Hubbard insulator NaCu2O2
Y. Matiks, A. N. Yaresko, K. Myung-Whun +4
We report the results of a comprehensive spectroscopic ellipsometry study of NaCu2O2, a compound composed of chains of edge-sharing Cu2+O4 plaquettes and planes of Cu1+ ions in a O…
The dimerized ferromagnetic Heisenberg chain
A. Herzog, P. Horsch, A. M. Oles +1
Ferromagnetic, in contrast to antiferromagnetic, Heisenberg chains can undergo a Spin-Peierls dimerization only at finite temperatures. They show reentrant behavior as a function o…
Exciton doublet in the Mott-Hubbard LiCuVO insulator identified by spectral ellipsometry
Y. Matiks, P. Horsch, R. K. Kremer +2
Spectroscopic ellipsometry was used to study the dielectric function of LiCuVO, a compound comprised of chains of edge-sharing CuO plaquettes, in the spectral range (0.75…
Helicoidal magnetic order in a clean copper oxide spin chain compound
L. Capogna, M. Mayr, P. Horsch +6
We report susceptibility, specific heat, and neutron diffraction measurements on NaCuO, a spin-1/2 chain compound isostructural to LiCuO, which has been extensively…
Photoemission spectra of LaMnO3 controlled by orbital excitations
Jeroen van den Brink, Peter Horsch, Andrzej M. Oles
We investigate the spectral function of a hole moving in the orbital-ordered ferromagnetic planes of LaMnO, and show that it depends critically on the type of orbital ordering.…