47 citations · 105 across the 4 of their papers we have counts for
4 papers
Covalency effects on the magnetism of EuRh2P2
Robert Schmitz, Erwin Mueller-Hartmann
In experiments, the ternary Eu pnictide EuRh2P2 shows an unusual coexistence of a non-integral Eu valence of about 2.2 and a rather high Neel temperature of 50 K. In this paper, we…
Mott-Hubbard exciton in the optical conductivity of YTiO3 and SmTiO3
A. Gössling, R. Schmitz, H. Roth +5
In the Mott-Hubbard insulators YTiO3 and SmTiO3 we study optical excitations from the lower to the upper Hubbard band, d^1d^1 -> d^0d^2. The multi-peak structure observed in the op…
The spin-wave spectrum of the Jahn-Teller system LaTiO3
Robert Schmitz, Ora Entin-Wohlman, Amnon Aharony +2
We present an analytical calculation of the spin-wave spectrum of the Jahn-Teller system LaTiO3. The calculation includes all superexchange couplings between nearest-neighbor Ti io…
The magnetic structure of the Jahn-Teller System LaTiO3
Robert Schmitz, Ora Entin-Wohlman, Amnon Aharony +2
We investigate the effect of the experimentally observed Jahn-Teller distortion of the oxygen octahedra in LaTiO3 on the magnetic exchange. We present a localized model for the eff…