Percolative phase separation underlies colossal magnetoresistance in mixed-valent manganites
Article Abstract:
Colossal magnetoresistance has been much researched in ferromagnetic perovskite mangnanites, but there are still uncertainties as to why magneto-resistive response rises dramatically when the Curie temperature (Tc) is reduced. Electron microscopy data was used to show that the prototypical (La,Pr,Ca)MnO(sub3) system is phase separated electronically into a mixture of insulating regions and metallic, ferromagnetic domains. Percolative transport via the ferromagnetic domains explains the colossal magnetoresistive effect in low-Tc systems.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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Pairing of charge-ordered stripes in (La,Ca)MnO3
Article Abstract:
It has been suggested that an awareness of the inclination of systems of charge and spin in the formation of stripe phases may help in the comprehension of the physics of high temperature superconductors. New research investigates a new pattern of charge localization in a two component Bose-Einstein condensate formed from rubidium and sodium atoms.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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Electric polarization reversal and memory in a multiferroic material induced by magnetic fields
Article Abstract:
Multiferroics or magnetoelectrics possess two or more switchable states such as polarization, magnetization or strain. The results indicate that one can visualize a ferroelectric memory that can be recorded magnetically.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
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