1 citations · 1 across the 8 of their papers we have counts for
8 papers
Comment on a Phys. Rev. Lett. paper: 94 (2005) 146402: Orbital symmetry and Electron Correlation in NaxCoO2
R. J. Radwanski, Z. Ropka
We argue that the electronic structure considered in a Phys. Rev. Lett. paper 94 (2005) 146402 of the Co3+ ion in the CoO6 octahedron of NaxCoO2 is completely wrong. The presented…
Violation of the Curie law in Na2V3O7 as the crystal-field and spin-orbit coupling effect
R. J. Radwanski, Z. Ropka
We have shown that the observed drastic violation of the Curie-Weiss law in Na2V3O7, reported in Phys. Rev. Lett. 90 (2003) 167202, is caused by conventional crystal-field interact…
Comment on Phys. Stat. Sol. (b) 236 (2003) 281 paper by A. M. Oles "Orbital ordering and orbital fluctuations in transition metal oxides"
R. J. Radwanski, Z. Ropka
We argue that the 3A2 state considered by Oles in Phys. Stat. Sol. (b) 236 (2003) 281 for the d2 system occurring in the V3+ ion in V2O3 and LaVO3 as well as in Ti2+ ion in TiO and…
Strongly-correlated crystal-field approach to 3d oxides - the orbital magnetism in 3d-ion compounds
R. J. Radwanski, Z. Ropka
We have developed the crystal-field approach with strong electron correlations, extended to the Quantum Atomistic Solid-State theory (QUASST), as a physically relevant theoretical…
Orbital and spin moment in CoO
R. J. Radwanski, Z. Ropka
The orbital and spin moment of the Co2+ ion in CoO has been calculated within the quasi-atomic approach with taking into account the intra-atomic spin-orbit coupling and crystal fi…
Comment on "Low-dimensional spin S=1/2 system at the quantum critical limit: Na2V3O7"
R. J. Radwanski, Z. Ropka
We contest the interpretation by Gavilano et al. (Phys.Rev.Lett. 90 (2003) 167202) of violation of the Curie law behavior of the paramagnetic susceptibility at low temperatures by…