Dynamic Correlations in a Random Spin-1/2 XY Chain

• Authors: T. Verkholyak , O. Derzhko , T. Krokhmalskii , J. Stolze
• Languages of publication: EN

Abstracts

EN

We examine dynamic quantities of a random spin-1/2 isotropic XY chain in a transverse field. The randomness is related to the sign of the nearest-neighbor exchange interaction and can be eliminated by a suitable transformation. As a result, the dynamic quantities for the random spin chain are related to the same dynamic quantities for the homogeneous spin chain. We use the available results for the latter model to discuss the effect of randomness on the dynamic structure factors of the quantum spin chain.

Keywords

EN

75.10.Jm; 75.40.Gb

Discipline

• 75.40.Gb: Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, 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: 2008
• Volume: 113
• Issue: 1
• Pages: 441-444

Dates

published

2008-01

received

2007-07-09

Contributors

author

T. Verkholyak

• Institute for Condensed Matter Physics, NASU, 1 Svientsitskii Street, L'viv-11, 79011, Ukraine

author

O. Derzhko

• Institute for Condensed Matter Physics, NASU, 1 Svientsitskii Street, L'viv-11, 79011, Ukraine

author

T. Krokhmalskii

• Institute for Condensed Matter Physics, NASU, 1 Svientsitskii Street, L'viv-11, 79011, Ukraine

author

J. Stolze

• Institut fűr Physik, Universität Dortmund, 44221, Dortmund, Germany

References

• 1. A. Furusaki, M. Sigrist, P. A. Lee, K. Tanaka, N. Nagaosa, Phys. Rev. Lett. 73, 2622 (1994)
• 2. K. Hamacher, J. Stolze, W. Wenzel, Phys. Rev. Lett. 89, 127202 (2002)
• 3. O. Derzhko, T. Krokhmalskii, J. Stolze, J. Phys. A 33, 3063 (2000);O. Derzhko, T. Krokhmalskii, J. Stolze, J. Phys. A 35, 3573 (2002)
• 4. H.B. Cruz, L.L. Gonçalves, J. Phys. C 14, 2785 (1981)
• 5. U. Brandt, K. Jacoby, Z. Phys. B 25, 181 (1976)
• 6. T. Verkholyak, O. Derzhko, T. Krokhmalskii, J. Stolze, in preparation

Identifiers

DOI

10.12693/APhysPolA.113.441