| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1519288 | Journal of Physics and Chemistry of Solids | 2006 | 8 Pages |
Abstract
In this paper, a competition between a ferromagnetic metal and a charge/orbital-ordered insulator has been investigated for RE1−xAExMnO3 (x=0.45x=0.45) with RE and AE being rare earth elements, ranging from La to Gd, and alkaline earth elements, Ca, Sr and Ba, respectively. A phase diagram is deduced in the plane of the effective one-electron bandwidth versus the magnitude of quenched disorder, which can be controlled by the averaged value and the variance of the RE/AE ionic radii, respectively. In the vicinity of the phase boundary, the ferromagnetic transition temperature is critically suppressed, and the colossal magnetoresistance (CMR) is enhanced.
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Authors
Y. Tomioka, Y. Okimoto, J.H. Jung, R. Kumai, Y. Tokura,