126 citations · 388 across the 10 of their papers we have counts for
10 papers
Quantum -- antiferromagnet on the stacked square lattice: Influence of the interlayer coupling on the ground-state magnetic ordering
D. Schmalfuss, R. Darradi, J. Richter +2
Using the coupled-cluster method (CCM) and the rotation-invariant Green's function method (RGM), we study the influence of the interlayer coupling on the magnetic orderin…
Green's function theory of quasi-two-dimensional spin-half Heisenberg ferromagnets: stacked square versus stacked kagomé lattice
D. Schmalfuß, J. Richter, D. Ihle
We consider the thermodynamic properties of the quasi-two-dimensional spin-half Heisenberg ferromagnet on the stacked square and the stacked kagomé lattices by using the spin-rotat…
Ground state and low-lying excitations of the spin-1/2 XXZ model on the kagome lattice at magnetization 1/3
A. Honecker, D. C. Cabra, M. D. Grynberg +5
We study the ground state and low-lying excitations of the S=1/2 XXZ antiferromagnet on the kagome lattice at magnetization one third of the saturation. An exponential number of no…
The spin-half Heisenberg antiferromagnet on the square-kagomé lattice: Ground state and low-lying excitations
J. Richter, J. Schulenburg, P. Tomczak +1
We discuss the ground state and the low-lying excitations of the spin-half Heisenberg antiferromagnet on the two-dimensional square-kagome lattice. This magnetic system belongs to…
Absence of long-range order in a spin-half Heisenberg antiferromagnet on the stacked kagome lattice
D. Schmalfuss, J. Richter, D. Ihle
We study the ground state of a spin-half Heisenberg antiferromagnet on the stacked kagome lattice by using a spin-rotation-invariant Green's-function method. Since the pure two-dim…
Absence of magnetic order for the spin-half Heisenberg antiferromagnet on the star lattice
J. Richter, J. Schulenburg, A. Honecker +1
We study the ground-state properties of the spin-half Heisenberg antiferromagnet on the two-dimensional star lattice by spin-wave theory, exact diagonalization and a variational me…