Magnetism, Charge Order and Giant Magnetoresistance in SrFeO${}_{3-\delta }$ Single Crystals

Abstract

The electronic and magnetic properties of SrFeO${}_{3-\delta }$ single crystals with controlled oxygen content ($0\le \delta \le 0.19$) have been studied systematically by susceptibility, transport and spectroscopic techniques. An intimate correlation between the spin-charge ordering and the electronic transport behavior is found. Giant negative as well as positive magnetoresistance are observed.

published version

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