179 citations · 440 across the 26 of their papers we have counts for
9 papers · 1 filter
The Effective Spin Hamiltonian and Phase Separation Instability of the Almost Half-Filled Hubbard Model and Narrow-Band {\it S-f} Model
M. I. Auslender, M. I. Katsnelson
The effective spin Hamiltonian is constructed in the framework of the almost half-filled Hubbard model on the Cayley tree by means of functional integral technique with the use of…
Comment on "Spin-Glass Solution of the Double-Exchange Model in Infinite Dimensions"
E. Kogan, M. Auslender
In a paper submitted to the Arxive some time ago (cond-mat/0509270), R. S. Fishman et al. considered double-exchange model on a Bethe lattice in infinite dimensions using dynamical…
Interplay between itinerant and localized states in CaMn1-xRuxO3 (x =0 - 0.5) manganites
V. Markovich, M. Auslender, I. Fita +6
Magnetic properties of polycrystalline CaMn1-xRuxO3 (x = 0 - 0.5) samples were investigated in the temperature range 4.2 - 250 K, under external magnetic field up to 15 kOe and und…
PM-FM transition in a DE model
E. Kogan, M. Auslender
We study paramagnetic - ferromagnetic transition due to exchange interaction between classical localized magnetic moments and conduction electrons. By solving the Dynamical Mean Fi…
Ground state of a double-exchange system containing impurities: bounds of ferromagnetism
Eugene Kogan, Mark Auslender, Eran Dgani
We study the boundary between ferromagnetic and non-ferromagnetic ground state of a double-exchange system with quenched disorder for arbitrary relation between Hund exchange coupl…
From the double-exchange Hamiltonian to the model: Classical spins
Eugene Kogan, Mark Auslender
From the double-exchange Hamiltonian with classical localized spins in the limit of large but finit Hund exchange coupling we obtain the model (with classical localized spins…
Ferromagnetic transition in a double-exchange system with alloy disorder
Mark Auslender, Eugene Kogan
We study ferromagnetic transition in three-dimensional double-exchange model containing impurities. The influence of both spin fluctuations and impurity potential on conduction ele…
Ferromagnetic transition in a double-exchange system containing impurities
Mark Auslender, Eugene Kogan
We study ferromagnetic transition in three-dimensional double-exchange model containing impurities. The influence of both spin fluctuations and impurity potential on conduction ele…
Localization and Dephasing Driven by Magnetic Fluctuations in Low Carrier Density Colossal Magnetoresistance Materials
Eugene Kogan, Mark Auslender, Moshe Kaveh
Localization and dephasing of conduction electrons in a low carrier density ferromagnet due to scattering on magnetic fluctuations is considered. We claim the existence of the "mob…