Two-phase coexistence is tunable and is not the equilibrium state in half-doped manganites

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We discuss our very interesting experimental observation that the low-temperature two-phase coexistence in half-doped manganites is multi-valued (at any field) in that we can tune the coexisting antiferromagnetic-insulating(AF-I) and the ferromagnetic-metallic(FM-M) phase-fractions by following different paths in (H,T) space. We have shown experimentally that the phase-fraction, in this two-phase coexistence, can take continuous infinity of values. All but one of these are metastable, and two-phase coexistence is not an equilibrium state.
Manuscript of invited talk at MESODIS Conference at IIT, Kanpur, December 2006

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Strongly Correlated Electrons, Materials Science

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http://salesiana.dossiersoluciones.com/handle/123456789/125138

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0703140
 http://arxiv.org/abs/cond-mat/0703140

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arXiv