Spin-1/2 XX Chains with Three-Spin Interactions

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

Abstracts

EN

We consider a spin-1/2 XX chain with three-spin interactions which is equivalent to a system of noninteracting spinless fermions.We examine some dynamic quantities of the spin model.In particular, we calculate analytically the dynamic transverse (zz) structure factor which is governed by a two-fermion excitation continuum. Moreover, we compute numerically the dynamic xx structure factor which is a many-fermion dynamic quantity.We illustrate how the three-spin interactions manifest themselves in the dynamic probes.

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

• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 1
• Pages: 437-440

Dates

published

2008-01

received

2007-07-09

Contributors

author

T. Krokhmalskii

• 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. Verkholyak

• 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

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• 6. T. Krokhmalskii, O. Derzhko, J. Stolze, T. Verkholyak, in preparation
• 7. O. Derzhko, T. Krokhmalskii, J. Stolze, J. Phys. A 33, 3063 (2000);O. Derzhko, T. Krokhmalskii, J. Stolze, J. Phys. A 35, 3573 (2002)

Identifiers

DOI

10.12693/APhysPolA.113.437