101 citations · 947 across the 69 of their papers we have counts for
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Evidences for local non-centrosymmetricity and strong phonon anomaly in EuCu2As2: A Raman spectroscopy and lattice dynamics study
Debasmita Swain, Mainak Dey Sarkar, Andrzej Ptok +3
Phonon modes and their association with the electronic states have been investigated for the metallic EuCuAs system. In this work, we present the Raman spectra of this…
Influence of Electrons on the Electronic Band Structure of Rare-Earth Nickelates
Andrzej Ptok, Surajit Basak, Przemysław Piekarz +1
Recently, superconductivity was discovered in the infinite layer of hole-doped nickelates NdNiO. Contrary to this, superconductivity in LaNiO is still under debate. Thi…
Origin of monoclinic distortion and its impact on the electronic properties in KO
Olga Sikora, Dorota Gotfryd, Andrzej Ptok +4
We use the density functional theory and lattice dynamics calculations to investigate the properties of potassium superoxide KO in which spin, orbital, and lattice degrees of f…
Diversity of charge orderings in correlated systems
Konrad Jerzy Kapcia, Jan Barański, Andrzej Ptok
The phenomenon associated with inhomogeneous distribution of electron density is known as a charge ordering. In this work, we study the zero-bandwidth limit of the extended Hubbard…