J. Chaloupka

activity

20082025

most citedUnusual electron correlations in NaxCoO2 due to the spin-state quasidegeneracy of cobalt ions

10 citations · 13 across the 3 of their papers we have counts for

collaborators

3 papers

cond-mat.str-el2025★ 1 cited

Superconductivity in the spin-state crossover materials: Nickelates with planar-coordinated low-spin Ni $^{2 +}$ ions

Jiří Chaloupka, Giniyat Khaliullin

We theoretically study quasi-two-dimensional nickel compounds, where the nickel ions assume Ni $^{2 +}$ $d^{8}$ valence state and feature a low-spin $S = 0$ ground state quasidegenerate…

cond-mat.str-el2023★ 2 cited

Hidden covalent insulator and spin excitations in SrRu $_{2}$ O $_{6}$

D. Csontosová, J. Chaloupka, H. Shinaoka +2

The density functional plus dynamical mean-field theory is used to study the spin excitation spectra of SrRu $_{2}$ O $_{6}$ . A good quantitative agreement with experimental spin excitati…

cond-mat.str-el2008★ 10 cited

Unusual electron correlations in NaxCoO2 due to the spin-state quasidegeneracy of cobalt ions

J. Chaloupka, G. Khaliullin

Recent studies exposed many remarkable properties of layered cobaltates NaxCoO2. Surprisingly, many-body effects have been found to increase at sodium-rich compositions of NaxCoO2…

Superconductivity in the spin-state crossover materials: Nickelates with planar-coordinated low-spin Ni2+ ions

Hidden covalent insulator and spin excitations in SrRu2​O6​

Unusual electron correlations in NaxCoO2 due to the spin-state quasidegeneracy of cobalt ions

Superconductivity in the spin-state crossover materials: Nickelates with planar-coordinated low-spin Ni $^{2 +}$ ions

Hidden covalent insulator and spin excitations in SrRu $_{2}$ O $_{6}$