52 citations · 120 across the 7 of their papers we have counts for
7 papers
Origin of the electron disproportionation in the metallic sodium cobaltates
Y. V. Lysogorskiy, S. A. Krivenko, I. R. Mukhamedshin +3
Recently the unusual metallic state with a substantially non-uniform distribution of a charge and mag\-ne\-tic density in CoO planes was found experimentally in the NaCoO$_…
Evolution of Co charge disproportionation with Na order in NaCoO
I. R. Mukhamedshin, A. V. Dooglav, S. A. Krivenko +1
Co NMR experiments have been performed on single crystals of the layered cobaltate NaCoO with x=0.77 which is an antiferromagnet with Néel temperature …
Ab-initio studying of spin states of sodium cobaltate NaCoO
Y. Lysogorskiy, O. Nedopekin, S. Krivenko +2
Puzzling properties of sodium cobaltates NaCoO become an issue of numerous recent theoretical and experimental investigations because of very high thermopower and intri…
Magnon softening and damping in the ferromagnetic manganites due to orbital correlations
S. Krivenko, A. Yaresko, G. Khaliullin +1
We present a theory for spin excitations in ferromagnetic metallic manganites and demonstrate that orbital fluctuations have strong effects on the magnon dynamics in the case these…
Impurity-induced spin polarization and NMR line broadening in underdoped cuprates
R. Kilian, S. Krivenko, G. Khaliullin +1
We present a theory of magnetic (S=1) Ni and nonmagnetic Zn impurities in underdoped cuprates. Both types of impurities are shown to induce S=1/2 moments on Cu sites in the proximi…
Local spin polarization in underdoped cuprates with impurities
G. Khaliullin, R. Kilian, S. Krivenko +1
We present a theory of magnetic (Ni) and nonmagnetic (Zn) impurities substituted into planar Cu sites in the normal state of underdoped cuprates exhibiting a spin gap. Both types o…
Impurity-induced moments in underdoped cuprates
G. Khaliullin, R. Kilian, S. Krivenko +1
We examine the effect of a nonmagnetic impurity in a two-dimensional spin liquid in the spin-gap phase, employing a drone-fermion representation of spin-1/2 operators. The properti…