ACTA

Scattering of Phonons in CsMnCl₃·2H₂O

V. Tkáč^a, K. Tibenská^b, A. Orendáčová^a, M. Orendáč^a, J. Šebek^c, V. Sechovský^d, A.G. Anders^e and A. Feher^a
^aInstitute of Physics, P.J. Šafárik University, Park Angelinum 9, 040 00 Košice, Slovak Republic
^bTechnical University in Košice, Letná 9, 04200 Košice, Slovak Republic
^cInstitute of Physics AS CR, Na Slovance 2, 18221 Prague, Czech Republic
^dCharles University in Prague, Faculty of Mathematics and Physics, Ke Karlovu 5, CZ 12116 Prague, Czech Republic
^eInstitute of Low Temperature Physics and Engineering, Lenin Av. 47, 3 101 64 Kharkov, Ukraine

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The thermal conductivity of the quasi-one-dimensional S = 5/2 Heisenberg antiferromagnet CsMnCl₃·2H₂O with the intrachain interaction J/k_B = 3 K was experimentally studied at temperatures from 2 to 25 K. The data analysis performed within the Debye model with the relaxation-time approximation unambiguously indicates the presence of the scattering of phonons on magnetic subsystem.

DOI: 10.12693/APhysPolA.118.950
PACS numbers: 75.30.Et, 75.40.Cx, 66.70.Lm, 75.30.Ds