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
Citations
More filters
Journal ArticleDOI
Fermi Liquid Theory and Ferromagnetic Manganites at Low Temperatures
TL;DR: In this paper, the authors evaluated the Fermi liquid characteristics for ferromagnetic manganites, A 1− x B x MnO 3, compared with experimental data for the best studied region x ≃ 0.3.
Journal ArticleDOI
The influence of Gd on magnetic and electric transport properties in La0.67?xGdxSr0.33CoO3
TL;DR: The magnetic and transport properties of polycrystalline samples La0.67−xGdxSr0.33CoO3 were investigated in this paper, and the experimental resistivity curves show a metal-semiconductor transition upon doping with Gd, and x = 0.40 is the critical doping point.
Journal ArticleDOI
Change in Mn 3d orbital state related to a metal-insulator transition in a bilayer manganite studied by magnetic Compton profile measurement
A. Koizumi,T. Nagao,Y. Kakutani,Nobuhiko Sakai,Kazuma Hirota,Yasukazu Murakami,Yasukazu Murakami +6 more
TL;DR: In this paper, the authors measured the temperature dependence of magnetic Compton profile (MCP) on a single crystal of a given crystal of an electron-rich ferromagnetic and electron-poor antiferromagnetic regions.
Journal ArticleDOI
Spin glass-like behavior, giant magnetocaloric and giant magnetoresistance effect in PrPb manganites
TL;DR: In this paper, the X-ray diffraction patterns show that the Pr1−xPbxMnO3 (x=0.1 − 0.5) perovskites have been fabricated by solid-state reaction.
Dissertation
Spin and lattice structures in materials with competinginteractions investigated by neutron scattering techniques
TL;DR: In this article, it was shown that the magnetism of a quasi-one-dimensional magnet γ-CoV is governed by the bond disorder caused by the weak ionic size mismatch between Cr and Sb.