96 citations · 146 across the 5 of their papers we have counts for
12 papers · 1 filter
Phase separation in doped systems with spin-state transitions
A. O. Sboychakov, K. I. Kugel, A. L. Rakhmanov +1
Spin-state transitions, observed in many transition metal compounds containing Co and Fe, may occur with the change of temperature, pressure, but also with doping, in…
A model for the phase separation controlled by doping and the internal chemical pressure in different cuprate superconductors
K. I. Kugel, A. L. Rakhmanov, A. O. Sboychakov +2
In the framework of a two-band model, we study the phase separation regime of different kinds of strongly correlated charge carriers as a function of the energy splitting between t…
Doped orbitally-ordered systems: another case of phase separation
K. I. Kugel, A. L. Rakhmanov, A. O. Sboychakov +1
A possible mechanism of electronic phase separation in the systems with orbital ordering is analyzed. We suggest a simple model taking into account an interplay between the delocal…
A mechanism for phase separation in copper oxide superconductors
A. O. Sboychakov, Sergey Savel'ev, A. L. Rakhmanov +2
A two-band Hubbard model is used to describe the band structure and phase separation (PS) in multiband superconductors, especially in cuprates. We predict a large peak in the densi…
Phase separation in a two-band model for strongly correlated electrons
A. O. Sboychakov, K. I. Kugel, A. L. Rakhmanov
The two-band Hubbard model is used to analyze a possibility of a non-uniform charge distribution in a strongly correlated electron system with two types of charge carriers. It is d…
Small-scale phase separation in doped anisotropic antiferromagnets
M. Yu. Kagan, K. I. Kugel, A. L. Rakhmanov +1
We analyze the possibility of the nanoscale phase separation manifesting itself in the formation of ferromagnetic (FM) polarons (FM droplets) in the general situation of doped anis…