Antiferromagnetic metallic state in the heavily doped region of perovskite manganites

Y. Moritomo, T. Akimoto, A. Nakamura, K. Ohoyama, M. Ohashi

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Abstract

Comprehensive study on electronic and magnetic properties has been performed for doped manganite near the phase boundary of the antiferromagnetic metallic (AFM) state, with changing the nominal hole concentration x and the one-electron bandwidth W. In La1-xSrxMnO3 with maximal W, the ferromagnetic metallic ground state in the low-x region is replaced by the AFM state beyond x=0.54. On the other hand, the charge-ordered insulating (COI) state appears atx∼0.5 for Nd1-xSrxMnOx with reduced W. The COI ground state is overwhelmed by the AFM state with further increasing x (≥0.54) or W. These competitions of the AFM state with the alternative ground states suggest that the AFM state is a fundamental ground state for doped manganites.

Original languageEnglish
Pages (from-to)5544-5549
Number of pages6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume58
Issue number9
Publication statusPublished - 1998 Sep 1

ASJC Scopus subject areas

  • Condensed Matter Physics

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    Moritomo, Y., Akimoto, T., Nakamura, A., Ohoyama, K., & Ohashi, M. (1998). Antiferromagnetic metallic state in the heavily doped region of perovskite manganites. Physical Review B - Condensed Matter and Materials Physics, 58(9), 5544-5549.