Experimental Study of the Thermal Transport in CsNiF_3 - An S = 1 Quantum Chain

• Authors: V. Tkáč , A. Orendáčová , M. Orendáč , D. Legut , K. Tibenská , A. Feher , M. Poirier , M. Meisel
• Languages of publication: EN

Abstracts

EN

The heat transport in a single-crystal of CsNiF_3 has been performed in the temperature range from 2 K to 7 K in a zero magnetic field, B = 0, as well as in sufficiently large magnetic fields, B = 6 T and 9 T, inducing the ferromagnetic ground state along the hard c-axis. CsNiF_3 represents an S = 1 quasi-one-dimensional XY ferromagnet with the intra-chain exchange coupling J/k_{B} ≈ 24 K, single-ion anisotropy D/k_{B} ≈ 8 K, and ordering temperature T_{N} = 2.7 K. Comparison of the phonon and magnon velocities suggests that phonons are the main heat carriers in this magnetic insulator. The thermal conductivity in B = 0 was analysed in the frame of a standard Debye model. The temperature dependence of the effective phonon mean free path was calculated from the experimental data, and the enhancement of the phonon mean free path in B ≠ 0 was obtained, indicating that magnons act as scattering centers for phonons.

Keywords

EN

75.30.Et   75.40.Cx   66.70.Lm   75.30.Ds  

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 5-6
• Pages: 1098-1101

Dates

published

2012-05

References

• 1. A.V. Sologubenko, H.R. Ott, in: Strong Interactions in Low Dimensions, Eds. D. Baeriswyl, L. Degiorgi, Kluwer Academic Publishers, Dordrecht 2004, p. 383
• 2. L.J. de Jongh, A.R. Miedema, Adv. Phys. 23, 1 (1974)
• 3. M. Steiner, J. Villain, C.G. Windsor, Adv. Phys. 25, 87 (1976)
• 4. H.-J. Mikeska, M. Steiner, Adv. Phys. 40, 191 (1991)
• 5. M. Orendáč, A. Orendáčová, E. Čižmár, J.-H. Park, A. Feher, S.J. Gamble, S. Gabáni, K. Flachbart, J. Karadamoglou, M. Poirier, M.W. Meisel, Phys. Rev. B 69, 184403 (2004)
• 6. V. Lisý, J. Tóthová, Acta Phys. Pol. A 118, 953 (2010)
• 7. D. Legut, U.D. Wdowik, J. Phys. Condens. Matter 22, 435402 (2010)
• 8. J. Karadamoglou, N. Papanicolaou, X. Wang, X. Zotos, Phys. Rev. B 63, 224406 (2001)
• 9. H.A.M. de Gronckel, W.J.M. de Jonge, K. Kopinga, L.F. Lemmens, Phys. Rev. B 44, 4654 (1991)
• 10. R.E. Schmidt, M. Welsh, S. Kummer-Dörner, D. Babel, Z. Anorg. Allg. Chem. 625, 637 (1999)
• 11. A. Orendáčová, K. Tibenská, E. Čižmár, M. Orendáč, A. Feher, Cryogenics 47, 61 (2007)
• 12. F. Ganot, P. Moch, J. Nouet, J. Magn. Magn. Mater. 31-34, 1165 (1983)
• 13. O.L. Anderson, J. Phys. Chem. Solids 24, 909 (1963)
• 14. R. Berman, Thermal Conductivity in Solids, Clarendon Press, Oxford 1976
• 15. J.V. Lebesque, J. Snel, J.J. Smith, Solid State Commun. 13, 371 (1973)
• 16. Ch. Rosinski, B. Elschner, J. Magn. Magn. Mater. 4, 193 (1977)
• 17. A.V. Sologubenko, K. Gianno, H.R. Ott, U. Ammerahl, A. Revcolevschi, Phys. Rev. Lett. 84, 2714 (2000)

Identifiers

DOI

10.12693/APhysPolA.121.1098