Fourier-transform infrared spectroscopy of hopping oscillations of electrons in vanadium oxide nanotubes

Min Ha Oh; Hyo Jung Kim; Kyu Won Lee; Cheol Eui Lee

doi:10.1063/1.4796038

Fourier-transform infrared spectroscopy of hopping oscillations of electrons in vanadium oxide nanotubes

Min Ha Oh, Hyo Jung Kim, Kyu Won Lee, Cheol Eui Lee

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

We have employed Fourier-transform infrared spectroscopy in order to study the phase transitions and charge dynamics in vanadium oxide nanotubes with alternating organic and inorganic layers. The structural phase transitions accompanied by conformational changes in the organic layer were identified. Besides, a phase transition around 343 K from an insulator phase to a metal-like one that arises from electron delocalization was observed in the inorganic layers, manifesting an electron hopping oscillation between the V⁴⁺ and V⁵⁺ sites.

Original language	English
Article number	113105
Journal	Applied Physics Letters
Volume	102
Issue number	11
DOIs	https://doi.org/10.1063/1.4796038
Publication status	Published - 2013 Mar 18

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRL Program 2012-0006259, Cyclotron Users Program 2012029495, and Project No. 2012034779). The measurements at the Korean Basic Science Institute (KBSI) are gratefully acknowledged.

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4796038

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abstract = "We have employed Fourier-transform infrared spectroscopy in order to study the phase transitions and charge dynamics in vanadium oxide nanotubes with alternating organic and inorganic layers. The structural phase transitions accompanied by conformational changes in the organic layer were identified. Besides, a phase transition around 343 K from an insulator phase to a metal-like one that arises from electron delocalization was observed in the inorganic layers, manifesting an electron hopping oscillation between the V4+ and V5+ sites.",

author = "{Ha Oh}, Min and {Jung Kim}, Hyo and {Won Lee}, Kyu and {Eui Lee}, Cheol",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRL Program 2012-0006259, Cyclotron Users Program 2012029495, and Project No. 2012034779). The measurements at the Korean Basic Science Institute (KBSI) are gratefully acknowledged.",

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AU - Ha Oh, Min

AU - Jung Kim, Hyo

AU - Won Lee, Kyu

AU - Eui Lee, Cheol

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRL Program 2012-0006259, Cyclotron Users Program 2012029495, and Project No. 2012034779). The measurements at the Korean Basic Science Institute (KBSI) are gratefully acknowledged.

PY - 2013/3/18

Y1 - 2013/3/18

N2 - We have employed Fourier-transform infrared spectroscopy in order to study the phase transitions and charge dynamics in vanadium oxide nanotubes with alternating organic and inorganic layers. The structural phase transitions accompanied by conformational changes in the organic layer were identified. Besides, a phase transition around 343 K from an insulator phase to a metal-like one that arises from electron delocalization was observed in the inorganic layers, manifesting an electron hopping oscillation between the V4+ and V5+ sites.

AB - We have employed Fourier-transform infrared spectroscopy in order to study the phase transitions and charge dynamics in vanadium oxide nanotubes with alternating organic and inorganic layers. The structural phase transitions accompanied by conformational changes in the organic layer were identified. Besides, a phase transition around 343 K from an insulator phase to a metal-like one that arises from electron delocalization was observed in the inorganic layers, manifesting an electron hopping oscillation between the V4+ and V5+ sites.

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JO - Applied Physics Letters

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Fourier-transform infrared spectroscopy of hopping oscillations of electrons in vanadium oxide nanotubes

Abstract

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