52 citations · 120 across the 7 of their papers we have counts for
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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 …
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…