Electron lone pair distortion facilitated metal-insulator transition in β-Pb{sub 0.33}V{sub 2}O{sub 5} nanowires
- Department of Physics, Applied Physics and Astronomy, Binghamton University, Binghamton, New York 13902 (United States)
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260 (United States)
- Materials Science and Engineering, Binghamton University, Binghamton, New York 13902 (United States)
- Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
The electronic structure of β-Pb{sub 0.33}V{sub 2}O{sub 5} nanowires has been studied with x-ray photoelectron spectroscopy techniques. The recent synthesis of defect-free β-Pb{sub 0.33}V{sub 2}O{sub 5} nanowires resulted in the discovery of an abrupt voltage-induced metal insulator transition. First principle calculations predicted an additional V-O-Pb hybridized “in-gap” state unique to this vanadium bronze playing a significant role in facilitating the transition. We confirm the existence, energetic position, and orbital character of the “in-gap” state. Moreover, we reveal that this state is a hybridized Pb 6s–O 2p antibonding lone pair state resulting from the asymmetric coordination of the Pb{sup 2+} ions.
- OSTI ID:
- 22269590
- Journal Information:
- Applied Physics Letters, Vol. 104, Issue 18; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
Programming interfacial energetic offsets and charge transfer in β-Pb0.33V2O5/quantum-dot heterostructures: Tuning valence-band edges to overlap with midgap states
The nature of electron lone pairs in BiVO{sub 4}