39 citations · 164 across the 8 of their papers we have counts for
8 papers · 1 filter
Ground state selection by magnon interactions in the fcc antiferromagnet
R. Schick, O. Götze, T. Ziman +3
We study the nearest-neighbor Heisenberg antiferromagnet on a face-centered cubic lattice with arbitrary spin S. The model exhibits degenerate classical ground states including two…
Frustrated spin- Heisenberg magnet on a square-lattice bilayer: High-order study of the quantum critical behavior of the ---- model
R. F. Bishop, P. H. Y. Li, O. Götze +1
The zero-temperature phase diagram of the spin- ---- model on an -stacked square-lattice bilayer is studied using the coupled cluster…
Emergence of magnetic long-range order in kagome quantum antiferromagnets
Johannes Richter, Oliver Götze
The existence of a spin-liquid ground state of the Heisenberg kagome antiferromagnet (KAFM) is well established. Meanwhile, also for the Heisenberg KAFM evidence for…
The route to magnetic order in the spin- kagome Heisenberg antiferromagnet: The role of interlayer coupling
Oliver Götze, Johannes Richter
While the existence of a spin-liquid ground state of the spin-1/2 kagome Heisenberg antiferromagnet (KHAF) is well established, the discussion of the effect of an interlayer coupli…
Ground-state properties of the triangular-lattice Heisenberg antiferromagnet with arbitrary spin quantum number
O. Götze, J. Richter, R. Zinke +1
We apply the coupled cluster method to high orders of approximation and exact diagonalizations to study the ground-state properties of the triangular-lattice spin- Heisenberg an…
The ground-state phase diagram of the XXZ spin-s kagome antiferromagnet: A coupled-cluster study
O. Götze, J. Richter
We use the coupled cluster method to high orders of approximation in order to calculate the ground-state phase diagram of the XXZ spin- kagome antiferromagnet with easy-plane an…
Thermodynamics of the two-dimensional frustrated J1-J2 Heisenberg ferromagnet in the collinear stripe regime: Susceptibility and correlation length
M. Härtel, J. Richter, O. Götze +2
We calculate the temperature dependence of the correlation length xi and the uniform susceptibility chi_0 of the frustrated J1-J2 square-lattice Heisenberg ferromagnet in the colli…
Ground-state phase diagram of the spin-1/2 square-lattice J1-J2 model with plaquette structure
O. Götze, S. E. Krüger, F. Fleck +2
Using the coupled cluster method for high orders of approximation and Lanczos exact diagonalization we study the ground-state phase diagram of a quantum spin-1/2 J1-J2 model on the…