715 citations
- Max Planck Institute for the Physics of Complex SystemsDE7 papers
- Institute of PhysicsPL5 papers
- Laboratoire de Physique ThéoriqueFR5 papers
- Russian Academy of SciencesRU5 papers
- Otto-von-Guericke-Universität MagdeburgDE4 papers
- Queen's UniversityCA4 papers
- Stony Brook UniversityUS4 papers
- Universidad Nacional de La PlataAR4 papers
- École Normale Supérieure de LyonFR3 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PaviaIT3 papers
- Laboratoire de Physique de l'ENS de LyonFR3 papers
- Technische Universität DresdenDE3 papers
8 papers · 1 filter
Magnetocaloric effect in two-dimensional spin-1/2 antiferromagnets
A. Honecker, S. Wessel
The magnetocaloric effect is studied at the transition to saturation in the antiferromagnetic spin-1/2 Heisenberg model on the simplest two-dimensional lattices, namely the square…
A New Approach for Boundary Recognition in Geometric Sensor Networks
Sandor P. Fekete, Michael Kaufmann, Alexander Kroeller +1
We describe a new approach for dealing with the following central problem in the self-organization of a geometric sensor network: Given a polygonal region R, and a large, dense set…
Electronic and magnetic properties of a hexanuclear ferric wheel
H. Nieber, K. Doll, G. Zwicknagl
The electronic and magnetic properties of the hexanuclear ferric wheel [LiFe6(OCH3)12-(dbm)6]PF6 have been studied with all-electron Hartree-Fock and full-potential density functio…
Clean Positive Operator Valued Measures
F. Buscemi, G. M. D'Ariano, M. Keyl +2
In quantum mechanics the statistics of the outcomes of a measuring apparatus is described by a positive operator valued measure (POVM). A quantum channel transforms POVM's into POV…
Jordan-Wigner approach to the frustrated spin one-half XXZ chain
T. Verkholyak, A. Honecker, W. Brenig
The Jordan-Wigner transformation is applied to study the ground state properties and dimerization transition in the chain. We consider different solutions of the me…
Magnetic-field induced band-structure change in CeBiPt
N. Kozlova, J. Hagel, M. Doerr +11
We report on a field-induced change of the electronic band structure of CeBiPt as evidenced by electrical-transport measurements in pulsed magnetic fields. Above ~25 T, the charge-…