Aberrant electronic and structural alterations in pressure tuned perovskite NaOsO3
- Center for High Pressure Science and Technology Advanced Research, Beijing (China); Vytautas Magnus University, Kaunas (Lithuania)
- Univ. of Vienna (Austria)
- Univ. of Vienna (Austria); Kunsan National Univ., Gunsan (Korea)
- Kyungpook National Univ., Daegu (Korea)
- Center for High Pressure Science and Technology Advanced Research, Beijing (China)
- National Inst. for Materials Science, Ibaraki (Japan)
- Argonne National Lab., Lemont, IL (United States)
- Univ. of Vienna (Austria); Univ. di Bologna (Italy)
The perovskite NaOsO3 has a metal–insulator transition at temperature 410 K, which is delicate, intriguing, and provokes a lot of debate on its nature. Our combined electrical resistance, Raman, and synchrotron x-ray diffraction experiments show that the insulating ground state in this osmate endures under high pressure up to at least 35 GPa. In this pressure range, compression reveals hidden hysteretic resistance properties with a transient metallic state near 200 K, manifested three electronic character anomalies (at 1.7, 9.0, and 25.5 GPa), and a structural transition to the singular polar phase (at ~18 GPa). We distinguish NaOsO3 from the regular crystallographic behavior of perovskites, though the electrical specificities resemble iridates and nickelates. The theoretical first-principle band structure and lattice dynamics calculations demonstrate that the magnetically itinerant Lifshitz-type mechanism with spin–orbit and spin–phonon interactions is responsible for these pressure-induced changes. Our findings provide another new playground for the emergence of new states in 5d materials by using high-pressure methods.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); Korea Institute of Science and Technology Information (KISTI) - National Supercomputing Center; National Key Research and Development Program of China; National Natural Science Foundation of China (NSFC); National Research Foundation of Korea (NRF); Austrian Science Fund (FWF)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1663223
- Journal Information:
- npj Quantum Materials, Vol. 5, Issue 1; ISSN 2397-4648
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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