2 citations · 4 across the 7 of their papers we have counts for
7 papers
Tight binding approximation and magnetic susceptibility
B. V. Karpenko, A. V. Kuznetsov, A. A. Bogolubova
The density of states and chemical potential as functions of temperature and filling degree of energy band were calculated. It was shown the peculiarity of concentration and temper…
The Manganites as Metallic Semiconductors
Boris V. Karpenko, Alexander V. Kuznetzov
The two-band model possessing metal and semiconductor properties is offered. This model may explain the appearance of temperature maximum of the electrical resistance at the proper…
The tight binding approximation and thermodynamic functions
B. V. Karpenko, A. V. Kuznetzov, V. V. Dyakin
The various thermodynamic functions dependence on degree of energy band occupation and temperature was studied. The one-band tight binding approximation for the electron energy spe…
Energy Band and Thermodynamics
B. V. Karpenko, A. V. Kuznetzov, V. V. Dyakin
The behavior of various thermodynamic functions in the dependence of degree of energy band occupation and temperature in the one-band tight binding approximation for the crystal wa…
The Exchange Parameters in Lanthanum Manganites
B. V. Karpenko, A. V. Kuznetzov
The spin-wave spectrum in the metallic ferromagnetic lantha-num cubic manganites was investigated. The interactions with four coordination spheres (32 neighbors) were taken into ac…
Magnetic properties of collinear structures of compound La1-xCaxMnO3
B. V. Karpenko, L. D. Falkovskaya, A. V. Kuznetsov
With use of homogeneous model for magnetic sub-lattice of compound La1-x CaxMnO3 allowing for Heisenberg superexchange and double exchange between nearest neighbors the temperature…