Nonpercolative metal-insulator transition in VO2 single crystals

Bongjin Simon Mun, Kai Chen, Joonseok Yoon, Catherine Dejoie, Nobumichi Tamura, Martin Kunz, Zhi Liu, Michael E. Grass, Sung Kwan Mo, Changwoo Park, Y. Yvette Lee, Honglyoul Ju

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Abstract

Detailed temperature-dependent transport, optical microscopy, and synchrotron-based polychromatic x-ray microdiffraction measurements have been carried out in the vicinity of the metal-insulator transition (MIT) temperature of VO2 single crystals. The formation and propagation of a real-space phase boundary along the rutile c axis is monitored during the transition. Pure metallic rutile R, as well as insulating monoclinic M1 phases, is observed at the onset of MIT. The two phases are separated by a sharp-phase boundary. Our findings suggest a nonpercolative nature of the MIT in VO2.

Original languageEnglish
Article number113109
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume84
Issue number11
DOIs
Publication statusPublished - 2011 Sep 21

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Mun, B. S., Chen, K., Yoon, J., Dejoie, C., Tamura, N., Kunz, M., Liu, Z., Grass, M. E., Mo, S. K., Park, C., Lee, Y. Y., & Ju, H. (2011). Nonpercolative metal-insulator transition in VO2 single crystals. Physical Review B - Condensed Matter and Materials Physics, 84(11), [113109]. https://doi.org/10.1103/PhysRevB.84.113109