Title :
Isotope effects in colossal magnetoresistance (CMR) manganites
Author :
Yu, Unjong ; Skrypnyk, Yu.V. ; Park, J.H. ; Min, B.I.
Author_Institution :
Dept. of Phys., Pohang Inst. of Sci. & Technol., South Korea
fDate :
9/1/1999 12:00:00 AM
Abstract :
Oxygen isotope effects observed in the metallic and the charge ordered phase of colossal magnetoresistance manganites are investigated by employing the combined theoretical model of the double exchange and interacting lattice polaron mechanism. We have shown that the isotope effects on the magnetic transition temperature TC in the metallic phase and the charge ordering transition temperature TCO in the charge ordered phase of manganites can be explained well in terms of the present model with reasonable physical parameters
Keywords :
charge-ordered states; colossal magnetoresistance; exchange interactions (electron); isotope effects; magnetic transitions; polarons; charge ordered phase; colossal magnetoresistance manganites; double exchange; interacting lattice polaron; isotope effects; magnetic transition temperature; metallic phase; Charge carrier processes; Colossal magnetoresistance; Electrons; Frequency; Isotopes; Lattices; Magnetic properties; Phonons; Physics; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
