Quantum statistics of interacting dimer spin systems
- Rüegg, Christian London Centre for Nanotechnology, Department of Physics and Astronomy, University College London, UK - Laboratory for Neutron Scattering, ETH Zurich and Paul Scherrer Institute, Villigen, Switzerland
- Normand, Bruce Département de Physique, Université de Fribourg, Switzerland
- Matsumoto, M. Department of Physics, Faculty of Science, Shizuoka University, Japan
- Niedermayer, Ch. Laboratory for Neutron Scattering, ETH Zurich and Paul Scherrer Institute, Villigen, Switzerland
- Furrer, A. Laboratory for Neutron Scattering, ETH Zurich and Paul Scherrer Institute, Villigen, Switzerland
- Krämer, K. W. Department of Chemistry and Biochemistry, University of Berne, Switzerland
- Güdel, Hans-Ulrich Department of Chemistry and Biochemistry, University of Berne, Switzerland
- Bourges, Ph. Laboratoire Léon Brillouin (CEA-CNRS), CEA-Saclay, Gif-sur-Yvette, France
- Sidis, Y. Laboratoire Léon Brillouin (CEA-CNRS), CEA-Saclay, Gif-sur-Yvette, France
- Mutka, H. Institut Laue Langevin, Grenoble, France
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19.12.2005
Published in:
- Physical Review Letters. - 2006, vol. 95, p. 267201
English
The compound TlCuCl₃ represents a model system of dimerized quantum spins with strong interdimer interactions. We investigate the triplet dispersion as a function of temperature by inelastic neutron scattering experiments on single crystals. By comparison with a number of theoretical approaches we demonstrate that the description of Troyer, Tsunetsugu, and Würtz [Phys. Rev. B 50, 13 515 (1994)] provides an appropriate quantum statistical model for dimer spin systems at finite temperatures, where many-body correlations become particularly important.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Physique
- Language
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 5971
- DOI 10.1103/PhysRevLett.95.267201
- Persistent URL
- https://folia.unifr.ch/unifr/documents/299955
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