Glassy dynamics of the inhomogeneous metallic phase in La1-xCaxMnO3

Details Glassy dynamics of the inhomogeneous metallic phase in La1-xCaxMnO3 Glassy dynamics of the inhomogeneous metallic phase in La1-xCaxMnO3

2001-05-08

arxiv.org/abs/cond-mat/0105159v1

Phys. Rev. B 65, 012403 (2001)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures

Scientific paper

10.1103/PhysRevB.65.012403

The anelastic spectra (elastic energy loss and dynamic modulus versus temperature) of La1-xCaxMnO3 have been measured for 0.33< x < 0.5. A peak in the imaginary part of the elastic susceptibility is found slightly below the Curie temperature, whose temperature and frequency dependences are typical of the dielectric and magnetic susceptibilities of relaxor ferroelectrics, spin glasses and other inhomogeneous frustrated systems. The fluctuations can be associated with the magnetic clusters which are observed by several techniques or with charge-ordered insulating domains in the low temperature inhomogeneous phase. The temperature dependent distribution function of the fluctuation energy barriers has been extracted by the analysis of the experimental curves.

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