Susceptibility Behaviour of CuGeO_{3}: Comparison between Experiment and the Quantum Transfer Matrix Approach

• Authors: M. Bieliński , J. Renard
• Languages of publication: EN

Abstracts

EN

Thermodynamical properties of one-dimensional S=1/2 Heisenberg model with dimerized nearest- and uniform next-nearest-neighbour interactions are studied by the numerically exact quantum transfer matrix method and the results are applied to CuGeO_{3}. Suzuki-Trotter formula is used to obtain a classical system with spin σ=3/2 and effective interactions between nearest-neigbours only. Magnetic susceptibility curve is calculated and compared with new experimental results performed in a wide temperature range, revealing the presence of frustration in the model proposed for CuGeO_{3}.

Keywords

EN

75.10.Jm; 75.40.Cx; 75.40.Mg

Discipline

• 75.40.Mg: Numerical simulation studies
• 75.40.Cx: Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.)
• 75.10.Jm: Quantized spin models, including quantum spin frustration

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2000
• Volume: 97
• Issue: 5
• Pages: 851-854

Dates

published

2000-05

Contributors

author

M. Bieliński

• Institute of Physics, Adam Mickiewicz University, ul. Umultowska 85, 61-614 Poznań, Poland

author

J. Renard

• Institut d'Electronique Fondamentale, Université Paris-Sud, Bâtiment 220, 91405 Orsay Cedex, France

Identifiers

DOI

10.12693/APhysPolA.97.851