Effect of local magnetic moments on spectral properties and resistivity near interaction- and doping-induced Mott transitions

We study the effect of formation and screening local magnetic moments on temperature interaction dependences spectral functions resistivity in vicinity metal-insulator transition. use dynamical mean-field theory for strongly correlated Hubbard model associate peculiarities above-mentioned properties with those found charge ${\ensuremath{\chi}}_{c}$ spin ${\ensuremath{\chi}}_{s}$ susceptibilities. show that at half filling maximum a certain ${T}^{*}$ corresponds to appearance central quasiparticle peak function entering metallic regime well-defined fermionic quasiparticles. At same time, crossover moments, determined by minimum double occupation, is smaller than scale coincides boundary ${T}_{\ensuremath{\beta}=1}(U)$ corresponding exponent $\ensuremath{\beta}\ensuremath{\equiv}dln\ensuremath{\rho}/dlnT=1$. Away from we find weak increase beginning completion (i.e., Kondo temperature) while unscreened exist only up few percent doping. In low-temperature $T<{T}_{\ensuremath{\beta}=1}$ simultaneous presence itinerant localized degrees freedom yields an almost linear dependence scattering rate resistivity.