Observation of a Griffiths phase in paramagnetic La1-xSrxMnO3

Details Observation of a Griffiths phase in paramagnetic La1-xSrxMnO3 Observation of a Griffiths phase in paramagnetic La1-xSrxMnO3

2005-01-19

arxiv.org/abs/cond-mat/0501443v3

Phys. Rev. Lett. 95, 257202 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

accepted for publication in PRL

Scientific paper

10.1103/PhysRevLett.95.257202

We report on the discovery of a novel triangular phase regime in the system La1-xSrxMnO3 by means of electron spin resonance and magnetic susceptibility measurements. This phase is characterized by the coexistence of ferromagnetic entities within the globally paramagnetic phase far above the magnetic ordering temperature. The nature of this phase can be understood in terms of Griffiths singularities arising due to the presence of correlated quenched disorder in the orthorhombic phase.

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