80 citations · 160 across the 4 of their papers we have counts for
5 papers
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 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…
Quantum kagome antiferromagnet in a magnetic field: Low-lying non-magnetic excitations versus valence-bond crystal order
D. C. Cabra, M. D. Grynberg, P. C. W. Holdsworth +5
We study the ground state properties of a quantum antiferromagnet on the kagome lattice in the presence of a magnetic field, paying particular attention to the stability of the pla…
Diagonalization of a bosonic quadratic form using CCM: Application on a system with two interpenetrating square lattice antiferromagnets
Sven E. Krueger, Dirk Schmalfuss, Johannes Richter
While the diagonalization of a quadratic bosonic form can always be done using a Bogoliubov transformation, the practical implementation for systems with a large number of differen…