- RNDr. Róbert Tarasenko, PhD.: Study of quantum processes in low dimensional magnets
- 13. 11. 2013, 14:00
- Seminar room KFM, first floor Ke Karlovu 5
- more information
Abstract:
We realized the experimental study of selected low-dimensional magnetic systems based oncopper ion with spin 1/2, which are representatives of systems with spatiallyanisotropic triangular lattice. The influence of spin anisotropy and spin fluctuationswas investigated - as a consequence of magnetic low-dimensionality and geometricalfrustration on the phase transition to the magnetically ordered state at non-zeromagnetic field. The study of electron paramagnetic resonance spectra indicated thepresence of Dzyaloshinskii-Moriya interaction and effective anisotropy in the exchangeinteraction. The magnetic structure of some studied systems was identified and thepresence of a field-induced Berezinskii-Kosterlitz-Thouless phase transition.