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

doi:10.1103/PhysRevB.84.113109

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

Department of Physics

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

40 Citations (Scopus)

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 VO_2.

Original language	English
Article number	113109
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	84
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevB.84.113109
Publication status	Published - 2011 Sept 21

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.84.113109

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title = "Nonpercolative metal-insulator transition in VO2 single crystals",

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.",

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doi = "10.1103/PhysRevB.84.113109",

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AU - Mun, Bongjin Simon

AU - Chen, Kai

AU - Yoon, Joonseok

AU - Dejoie, Catherine

AU - Tamura, Nobumichi

AU - Kunz, Martin

AU - Liu, Zhi

AU - Grass, Michael E.

AU - Mo, Sung Kwan

AU - Park, Changwoo

AU - Lee, Y. Yvette

AU - Ju, Honglyoul

PY - 2011/9/21

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N2 - 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.

AB - 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.

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Nonpercolative metal-insulator transition in VO₂ single crystals

Abstract

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