Lattice Dynamics in Cu(en)(H2O)2SO4 - A Low-Dimensional Quantum Magnet with Spin 1/2
L. Lederováa, A. Orendáčováa, R. Tarasenkoa, M. Bartosikb, V. Tkáča, M. Orendáča, A. Fehera
aInstitute of Physics, P.J. Šafárik University, Park Angelinum 9, 040 01 Košice, Slovakia
bInstitute of Material Science and Technology, The Vienna University of Technology, Austria
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The present work is devoted to the refinement of lattice contribution to the specific heat of magnetic insulator Cu(en)(H2O)2SO4. The analysis of thermodynamic and elastic measurements revealed that the uncertainty in the determination of this contribution did not affect the selection of the magnetic model.

DOI:10.12693/APhysPolA.137.955
topics: lattice specific heat, Debye temperature, Heisenberg antiferromagnet