Continuous metal-insulator transition of the antiferromagnetic perovskite NaOsO3

Details Continuous metal-insulator transition of the antiferromagnetic perovskite NaOsO3 Continuous metal-insulator transition of the antiferromagnetic perovskite NaOsO3

2009-10-25

arxiv.org/abs/0910.4722v1

Physics

Condensed Matter

Strongly Correlated Electrons

13 pages, 5 figures, PHYS. REV. B 80, 161104(R),(2009)

Scientific paper

Newly synthesized perovskite NaOsO3 shows Curie-Weiss metallic nature at high temperature and suddenly goes into an antiferromagnetically insulating state at 410 K on cooling. Electronic specific heat at the low temperature limit is absent, indicating that the band gap fully opens. In situ observation in electron microscopy undetected any lattice anomalies in the vicinity of the transition temperature. It is most likely that the antiferromagnetic correlation plays an essential role of the gap opening.

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