Dynamic Jahn-Teller Effect and Colossal Magnetoresistance in La 1-x Sr x MnO 3
TLDR
A model which incorporates the physics of dynamic Jahn-Teller and double-exchange effects is presented and solved via a dynamical mean field approximation to reproduce the behavior of the resistivity and magnetic transition temperature observed in Sr_x MnO_3.Abstract:
A model for the doped rare-earth manganites such as ${\mathrm{La}}_{1\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{MnO}}_{3}$ incorporating the physics of dynamic Jahn-Teller and double-exchange effects is presented and solved via a dynamical mean field approximation. The interplay of these two effects as the electron phonon coupling is varied reproduces the observed behavior of the resistivity and magnetic transition temperature.read more
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Journal ArticleDOI
The Effect of Sintering Temperature on Crystal Structure and Microstructure of Pr0.67Ba0.33MnO3 Ceramic
TL;DR: In this article, the influence of structure and microstructure towards sintering temperature of the polycrystalline perovskite manganites of Pr0.67Ba0.33MnO3 bulk ceramic samples were studied.
Journal ArticleDOI
Peculiarities of the volume magnetostriction of La1-xSrxMnO3 in the Curie point region
TL;DR: In this paper, the parallel and perpendicular magnetostriction with respect to the applied magnetic field and the thermal expansion Δl/l were studied on La1−xSrxMnO3 single crystals with x=01, 015, and 03.
Journal ArticleDOI
Insulator–metal transition and magnetoresistance of oxygen deficient La0.35Ca0.65MnOy
Yang Zhao,R. Fan,X.P. Zhang,H. Balci,S. B. Ogale,T. Venkatesan,Taraknath Mandal,Jagannatha Gopalakrishnan +7 more
TL;DR: The spin-dependent hopping model can account for the variation of magnetoresistance (MR) and C(M/M-s) with the decrease of oxygen content as discussed by the authors.
Journal ArticleDOI
The structural, electronic and magnetic properties of a symmetrical FeMoO terminated (001)-oriented slab of double perovskite Sr2FeMoO6
Yan Zhang,Vincent Ji,Ke-Wei Xu +2 more
TL;DR: In this paper, the structural, electronic and magnetic properties of a 9-layer symmetrical FeMoO terminated (001)-oriented slab of double perovskite Sr 2 FeO 6 have been studied by using the first-principle projector augmented wave potential within the generalized gradient approximation taking into account the on-site Coulomb repulsive (U ǫ = 2.0 eV for Fe and 1.0eV for Mo), and an outward relaxation is observed for each layer of the first four layers and the accompanying layer's rumpling has a decreasing trend
Book ChapterDOI
Soft Electronic Matter: Inhomogeneneous Phases in Strongly Correlated Condensed Matter
TL;DR: The physics of strong correlations has at its core a competition between the delocalizing effects of the kinetic energy and the localizing Coulomb potential, and the result is quite frequently the appearance of various types of spatially modulated phases, with simple examples being charge-and spin-density waves, but most importantly new phases of coupled modulated order as mentioned in this paper.