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Title: Electron lone pair distortion facilitated metal-insulator transition in β-Pb{sub 0.33}V{sub 2}O{sub 5} nanowires

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.
Authors:
;  [1] ; ;  [2] ;  [3] ; ;  [4] ;  [1] ;  [5]
  1. Department of Physics, Applied Physics and Astronomy, Binghamton University, Binghamton, New York 13902 (United States)
  2. Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260 (United States)
  3. Materials Science and Engineering, Binghamton University, Binghamton, New York 13902 (United States)
  4. Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
  5. (United States)
Publication Date:
OSTI Identifier:
22269590
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 18; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ELECTRONIC STRUCTURE; LEAD; QUANTUM WIRES; X-RAY PHOTOELECTRON SPECTROSCOPY