Phys. Rev. Lett. 93, 167206 (2004) [4 pages]Origin of the Glassy Magnetic Behavior of the Phase Segregated State of the PerovskitesReceived 17 March 2004; published 15 October 2004 In this Letter we demonstrate that the phase segregated state observed in many rare-earth perovskites constitutes a sort of self-generated assembly of magnetic clusters in which magnetic interaction introduces collectivity among them. We show that the observed glassy behavior (memory, aging, etc.) can be perfectly understood taking into account only the intercluster interactions. We address the fundamental question about whether this state constitutes classical spin glass or if, on the other hand, a new universality class must be defined. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.167206
DOI:
10.1103/PhysRevLett.93.167206
PACS:
75.75.+a, 75.40.–s
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