The project is devoted to the theoretical as well as experimental study of selected quasi-two-dimensional magnetically frustrated spin system, namely Cu(tn)Cl2 (tn=1,3 – diaminopropane). The complex study will be performed with a help of stage-of-the-art methods of theoretical physics based on the Density Functional Theory and experimental analyses, including the study of magnetic, transport and mechanical properties. In theoretical analyses we will focus on the study of magnetic properties, influence of spin-orbit coupling and van der Waals interaction as
well as thermodynamics stability, lattice specific heat and last, but no least, elastic constants of Cu(tn)Cl2 compound. To investigate the presence of phase transition in real material the thermodynamics characteristics, like specific-heat behaviour, susceptibility, magnetization or thermal conductivity will be examined experimentally. The mechanical analysis will be concentrate on examination of elastic properties, like Young modulus, Poisson ratio, thermal expansion as well as the sample hardness. The obtained results will contribute to a deeper understanding of mechanisms leading to the unconventional phenomena in two-dimensional magnetically frustrated spin system and will help us to better understand the role of quantum fluctuations in these materials.
