Nov 20, 2002
Nanoscale Phase Separation in CMR Materials
Elbio Dagotto, Florida State
http://fangio.magnet.fsu.edu/~dagotto/webpage/E_Dagoto.htm
In recent years, evidence of intrinsic nano-scale inhomogeneities in
manganites has been gathered by dozens of experimental groups. Theoretical
developments independently arrived to similar conclusions and provided a
tentative unifying framework to understand the colossal magnetoresistance
phenomenon as caused by these inhomogeneities. The status of this active
field of research will be reviewed [1]. The general aspects of the problem
will be discussed, including extensions to cuprates in the underdoped regime
where coexisting superconducting and antiferromagnetic clusters could be
possible [2].
- [1] A. Moreo et al., Science 283, 2034 (1999); E. Dagotto et al., Phys.
Reports 344, 1 (2001); E. Dagotto, Nanoscale Phase Separation and Colossal
Magnetoresistance, Springer-Verlag, Berlin, October 2002.
- [2] J. Burgy et al., Phys. Rev. Lett. 87, 277202 (2001).
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