Dimerization in honeycomb Na2RuO3 under pressure: a DFT study
D. D. Gazizova*+, A. V. Ushakov+, S. V. Streltsov*+
*Ural Federal University, 620002 Ekaterinburg, Russia
+Institute of Metal Physics, Russian Academy of Sciences, 620041 Ekaterinburg, Russia
Abstract
The structural properties of Na2RuO3 under pressure are
studied using density functional theory within the nonmagnetic generalized gradient
approximation (GGA). We found that one may expect a structural transition
at 3 GPa. This structure at the high-pressure phase is exactly
the same as the low-temperature structure of Li2RuO3 (at ambient
pressure) and is characterized by the P21/m space group. Ru ions form
dimers in this phase and one may expect strong modification of the
electronic and magnetic properties in Na2RuO3 at pressure higher
than 3 GPa.