Objective: Quantum materials exhibit strong electron-electron interaction, which gives rise to such remarkable phenomena as high temperature superconductivity and colossal magnetoresistance
. These materials mark one of the frontiers of modern condensed matter physics: a new class of solids where many-body physics dominates.
By studying the electric charge orbit and spin of the perovskite manganese oxide, it is helpful to understand the physical mechanisms of the change from the insulator to metal and colossal magnetoresistance
Cheong, and P Matl, "Floating-zone crystal growth of perovskite manganites with colossal magnetoresistance
," Journal of Crystal Growth, vol.
The colossal magnetoresistance
(CMR) of hole doped manganites [RE.sub.1-x] [A.sub.x]Mn[O.sub.3], with RE = La, Nd, and Pr and A = Ba, Sr, Ca, and Pb, is promising magnetoresistance materials in which the change of resistivity by applying magnetic field is so large that this effect is described as colossal.