185 citations · 1.5k across the 32 of their papers we have counts for
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Ground-state long-range order in quasi-one-dimensional Heisenberg quantum antiferromagnets: High-order coupled-cluster calculations
Ronald Zinke, Joerg Schulenburg, Johannes Richter
We investigate the ground-state magnetic long-range order of quasi-one-dimensional quantum Heisenberg antiferromagnets for spin quantum numbers s=1/2 and s=1. We use the coupled cl…
The quantum -- spin-1/2 Heisenberg model: Influence of the interchain coupling on the ground-state magnetic ordering in 2D
R. F. Bishop, P. H. Y. Li, R. Darradi +1
We study the phase diagram of the 2D -- spin-1/2 Heisenberg model by means of the coupled cluster method. The effect of the coupling on the Neel and stripe s…
Enhanced magnetocaloric effect in frustrated magnetic molecules with icosahedral symmetry
J. Schnack, R. Schmidt, J. Richter
We investigate the magnetocaloric properties of certain antiferromagnetic spin systems that have already been or very likely can be synthesized as magnetic molecules. It turns out…
Low-temperature thermodynamics for a flat-band ferromagnet: Rigorous versus numerical results
Oleg Derzhko, Andreas Honecker, Johannes Richter
The repulsive Hubbard model on a sawtooth chain exhibits a lowest single-electron band which is completely dispersionless (flat) for a specific choice of the hopping parameters. We…
The route of frustrated cuprates from antiferromagnetic to ferromagnetic spin-1/2 Heisenberg chains: Li2ZrCuO4 as a missing link near the quantum critical point
S. -L. Drechsler, O. Volkova, A. N. Vasiliev +8
From thermodynamics, LSDA+U calculations and exact diagonalization studies of a five-band Hubbard (Cu 3d, O 2p) model on CuO2 stripes we found that Li2ZrCuO4 (Li2CuZrO4 in traditio…