Evolution of Metallicity in Vanadium Dioxide by Creation of Oxygen Vacancies
| Autor: | Jongbum Kim, You Zhou, Aveek Dutta, Zhen Zhang, Mikhail A. Kats, Ronny Nawrodt, Helen Hejin Park, Chenghao Wan, Carsten Ronning, Xiaofei Guan, Thomas J. Larrabee, Alexandra Boltasseva, Fan Zuo, Jura Rensberg, Vladimir M. Shalaev, Shriram Ramanathan, Sharka M. Prokes |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Metallicity Oxide General Physics and Astronomy chemistry.chemical_element 02 engineering and technology Electron 021001 nanoscience & nanotechnology 01 natural sciences Oxygen Metal chemistry.chemical_compound Vanadium dioxide chemistry Chemical physics visual_art Phase (matter) 0103 physical sciences visual_art.visual_art_medium 010306 general physics 0210 nano-technology Ground state |
| Zdroj: | Physical Review Applied. 7 |
| ISSN: | 2331-7019 |
| Popis: | Finding ways to tune their states is the key to using correlated electron systems in device applications. The authors show how to cleanly generate an extremely oxygen-starved environment, which leads to the collapse of the insulating ground state in VO${}_{2}$, a prototypical correlated oxide. A nonvolatile metallic phase with unique optical properties is stabilized down to 2 K by oxygen vacancies, and the insulating phase plus intermediate-resistance states can be accessed reversibly via ``oxygen breathing''. |
| Databáze: | OpenAIRE |
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