Anisotropic strain induced directional metallicity in highly epitaxial LaBaCo<sub>2</sub>O<sub>5.5+δ</sub> thin films on (110) NdGaO<sub>3</sub> [electronic resource]
Electronic Properties And Materials; Magnetic Properties And Materials.
Saved in:
| Online Access: |
Online Access (via OSTI) |
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| Corporate Author: | |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2016.
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| Subjects: |
| Summary: | Electronic Properties And Materials; Magnetic Properties And Materials. |
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| Abstract: | Highly directional-dependent metal-insulator transition is observed in epitaxial double perovskite LaBaCo<sub>2</sub>O<sub>5.5+δ</sub> films. The film exhibit metallic along [100], but remain semiconducting along [010] under application of a magnetic field parallel to the surface of the film. The physical origin for the properties is identified as in-plane tensile strain arising from oxygen vacancies. First-principle calculations suggested the tensile strain drastically alters the band gap, and the vanishing gap opens up [100] conduction channels for Fermi-surface electrons. Lastly, our observation of strain-induced highly directional-dependent metal-insulator transition may open up new dimension for multifunctional devices. |
| Item Description: | Published through SciTech Connect. 11/21/2016. ": BFsrep37337" Scientific Reports 6 1 ISSN 2045-2322 AM. Chunrui Ma; Dong Han; Ming Liu; Gregory Collins; Haibin Wang; Xing Xu; Yuan Lin; Jiechao Jiang; Shengbai Zhang; Chonglin Chen. Univ. of Texas, San Antonio, TX (United States) |
| Physical Description: | 7 p. : digital, PDF file. |