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Study of the One- and Two-Band Models for Colossal Magnetoresistive Manganites Using the Truncated Polynomial Expansion Method
C. Sen, G. Alvarez, Y. Motome +5
Considerable progress has been recently made in the theoretical understanding of the colossal magnetoresistance (CMR) effect in manganites. The analysis of simple models with two c…
Goldstone-Mode Phonon Dynamics in the Pyrochlore Cd2Re2O7
C. A. Kendziora, I. A. Sergienko, R. Jin +4
We have measured the polarized Raman scattering spectra of Cd2Re2O7, the first superconducting pyrochlore, as a function of temperature. For temperatures below the cubic-to-tetrago…
Metallic "Ferroelectricity" in the Pyrochlore Cd2Re2O7
I. A. Sergienko, V. Keppens, M. McGuire +8
A class of materials known as ``ferroelectric metals'' was discussed theoretically by Anderson and Blount in 1965 [Phys. Rev. Lett. 14, 217 (1965)], but to date no examples of this…
On ``Epitaxial Pb(Zr,Ti)O thin films with coexisting tetragonal and rhombohedral phases''
I. A. Sergienko
I present here theory of PZT thin film - MgO substrate system thermal expansion effect. I show that elastic properties of the substrate have to be taken into account to describe th…