Evolution of magnetic polarons and spin-carrier interactions through the metal-insulator transition in Eu${}_{1-x}$Gd${}_x$O

Abstract

Raman scattering studies as functions of temperature, magnetic field, and Gd-substitution are used to investigate the evolution of magnetic polarons and spin-carrier interactions through the metal-insulator transition in Eu${}_{1-x}$Gd${}_x$O. These studies reveal a greater richness of phase behavior than have been previously observed using transport measurements: a spin-fluctuation-dominated paramagnetic (PM) phase regime for T $>$ T${}^{\ast }$ $>$ T${}_C$, a two-phase regime for T $<$ T${}^{\ast }$ in which magnetic polarons develop and coexist with a remnant of the PM phase, and an inhomogeneous ferromagnetic phase regime for T $<$ T${}_C$.

References in corpus (3)

• Colossal Effects in Transition Metal Oxides Caused by Intrinsic Inhomogeneities
• Explanation of Giant Cluster Coexistence in Doped Manganites and Other Compounds
• Magnetic Polarons and the Metal-Semiconductor Transition in (Eu,La)B6 and EuO: Raman Scattering Studies

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