EPR Study of the Two-Dimensional Quantum System Cu(en)(H2O)2SO4
R. Tarasenkoa, A. Orendáčováa, E. Čižmára, M. Orendáča, S. Zvyaginb and J. Wosnitzab
aCentre of Low Temperature Physics of P.J. Šafárik University and SAS, Park Angelinum 9, SK-041 54 Košice, Slovak Republic
bDresden High Magnetic Field Laboratory (HLD), Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
Full Text PDF
The angular dependence of electron paramagnetic resonance spectra of Cu(en)(H2O)2SO4 single crystals was studied in the X-band frequency range at temperatures 4 and 300 K. Analysis of the linewidth at 300 K revealed nice agreement with the angular variation of the g-factor. This coincidence is the manifestation of the symmetric and antisymmetric exchange coupling, as main broadening mechanisms in Cu(en)(H2O)2SO4 at high temperatures. The radical change of the angular dependence of the linewidth observed at 4 K can be ascribed to dipolar coupling.
DOI: 10.12693/APhysPolA.121.1095
PACS numbers: 76.30.Fc, 75.40.-s