Continuous metal-insulator transition of the antiferromagnetic perovskite NaOsO{sub 3}.

Journal Article · Thu Jan 01 00:00:00 EST 2009 · Phys. Rev. B

DOI:https://doi.org/10.1103/PhysRevB.80.161104· OSTI ID:981326

Shi, Y G; Guo, Y F; Yu, S; Arai, M; Belik, A A; Sato, A; Yamaura, K; Takayama-Muromachi, E; Tian, H F; Yang, H X; Li, J Q; Varga, T; Mitchell, J F; Okamoto, S; ORNL,

The perovskite NaOsO{sub 3} shows a 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 in the gap opening.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC); WPI Initiative on Materials Nanoarchitectonics from MEXT, Japan; Grants-in-Aid for Scientific Research JSPS
• DOE Contract Number: DE-AC02-06CH11357
• OSTI ID: 981326
• Report Number(s): ANL/MSD/JA-65473; TRN: US201012%%1310
• Journal Information: Phys. Rev. B, Vol. 80, Issue 2009; ISSN 1098-0121
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRON MICROSCOPY
ELECTRONIC SPECIFIC HEAT
PEROVSKITE
TRANSITION TEMPERATURE