81 citations · 207 across the 7 of their papers we have counts for
7 papers
A possibility of high spin hole states in doped CoO layered systems
Krzysztof Rościszewski, Andrzej M. Oleś
We introduce and investigate an effective five-band model for and electrons to describe doped cobalt oxides with Co and Co ions in two-dimensional CoO$…
Jahn-Teller mechanism of stripe formation in doped layered LaSrNiO nickelates
Krzysztof Rościszewski, Andrzej M. Oleś
We introduce an effective model for electrons to describe quasi-two-dimensional layered LaSrNiO nickelates and study it using correlated wave functions on $…
Jahn-Teller distortions and the magnetic order in the perovskite manganites
Krzysztof Rościszewski, Andrzej M. Oleś
We introduce an effective model for electrons to describe three-dimensional perovskite (LaSrMnO and LaCaMnO) manganites and study the magn…
Ab-Initio Calculation of the Metal-Insulator Transition in Lithium rings
Beate Paulus, Krzysztof Rosciszewski, Peter Fulde +1
We study how the Mott metal-insulator transition (MIT) is affected when we have to deal with electrons with different angular momentum quantum numbers. For that purpose we apply ab…
The convergence of the ab-initio many-body expansion for the cohesive energy of solid mercury
Beate Paulus, Krzysztof Rosciszewski, Nicola Gaston +2
A many-body expansion for mercury clusters of the form E = \sum_{i<j}Δε_{ij} + \sum_{i<j<k}Δε_{ijk} + ... \quad, does not converge smoothly with increasing cluster size towards the…
Metallic bonding due to correlations: A quantum chemical ab-initio calculation of the cohesive energy of mercury
Beate Paulus, Krzysztof Rosciszewski
Solid mercury in the rhombohedral structure is unbound within the self-consistent field (Hartree-Fock) approximation. The metallic binding is entirely due to electronic correlation…