Elbio Dagotto et al 2008 J. Phys.: Condens. Matter 20 434224 doi:10.1088/0953-8984/20/43/434224
Elbio Dagotto1,2, Seiji Yunoki1,2, Cengiz Şen3, Gonzalo Alvarez4 and Adriana Moreo1,2
Show affiliationsThis paper is a brief review of the status of 'phase separation' ideas in manganites and cuprates, mainly focused on the recent efforts by the authors. It is argued that in the last year considerable progress has been made in the understanding of manganites, since the famous colossal magnetoresistance peak in the resistivity versus temperature has been numerically observed in unbiased Monte Carlo simulations using realistic models (namely, including double exchange, phonons, and quenched disorder). It is also conjectured that a phenomenology similar to the one found in manganites could be present in the underdoped regime of the cuprates. It is predicted that a state with superconducting patches exists above the critical temperature in the underdoped regime, in agreement with recent scanning tunneling microscopy experiments.
75.30.Et Exchange and superexchange interactions
75.47.Gk Colossal magnetoresistance
74.10.+v Occurrence, potential candidates
74.72.-h Cuprate superconductors (high-Tc and insulating parent compounds)
Issue 43 (29 October 2008)
Received 7 July 2008
Published 9 October 2008
Elbio Dagotto et al 2008 J. Phys.: Condens. Matter 20 434224
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