212 citations
- Otto-von-Guericke-Universität MagdeburgDE15 papers
- Max Planck Institute for the Physics of Complex SystemsDE9 papers
- Klinikum MagdeburgDE8 papers
- Bielefeld UniversityDE7 papers
- Osnabrück UniversityDE6 papers
- Medical University of ViennaAT5 papers
- Novartis (Switzerland)CH5 papers
- Friedrich-Alexander-Universität Erlangen-NürnbergDE4 papers
- Heidelberg UniversityDE4 papers
- Helmut Schmidt UniversityDE4 papers
- Max Planck Institute for Chemical Physics of SolidsDE4 papers
- Max Planck SocietyDE4 papers
4 papers · 1 filter
Frustration and Dzyaloshinsky-Moriya anisotropy in the kagome francisites CuBi(SeOOX
Ioannis Rousochatzakis, Johannes Richter, Ronald Zinke +1
We investigate the antiferromagnetic canting instability of the spin-1/2 kagome ferromagnet, as realized in the layered cuprates CuBi(SeOOX (X=Br, Cl, and I). While…
The spin-1/2 square-lattice J_1-J_2 model: The spin-gap issue
J. Richter, R. Zinke, D. J. J. Farnell
We use the coupled cluster method to high orders of approximation in order to calculate the ground-state energy, the ground-state magnetic order parameter, and the spin gap of the…
Berry phase and quantum structure
Holger Lyre
The paper aims to spell out the relevance of the Berry phase in view of the question what the minimal mathematical structure is that accounts for all observable quantum phenomena.…
Lifting properties of maximal lattice-free polyhedra
Gennadiy Averkov, Amitabh Basu
We study the uniqueness of minimal liftings of cut-generating functions obtained from maximal lattice-free polyhedra. We prove a basic invariance property of unique minimal lifting…