Role of joule heating effect and bulk-surface phases in voltage-driven metal-insulator transition in VO2 crystal

Bongjin Simon Mun; Joonseok Yoon; Sung Kwan Mo; Kai Chen; Nobumichi Tamura; Catherine Dejoie; Martin Kunz; Zhi Liu; Changwoo Park; Kyungsun Moon; Honglyoul Ju

doi:10.1063/1.4817727

Role of joule heating effect and bulk-surface phases in voltage-driven metal-insulator transition in VO₂ crystal

Bongjin Simon Mun, Joonseok Yoon, Sung Kwan Mo, Kai Chen, Nobumichi Tamura, Catherine Dejoie, Martin Kunz, Zhi Liu, Changwoo Park, Kyungsun Moon, Honglyoul Ju

Department of Physics

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

56 Citations (Scopus)

Abstract

We report the characteristics of a voltage-induced metal-insulator transition (MIT) in macro-sized VO₂ crystals. The square of MIT onset voltage (V_CMIT²) value shows a linear dependence with the ambient temperature, suggesting that the Joule heating effect is the likely cause to the voltage-induced MIT. The combination of optical microscope images and Laue microdiffraction patterns show the simultaneous presence of a metallic phase in the bulk of the crystal with partially insulating surface layers even after the MIT occurs. A large asymmetry in the heating power just before and after the MIT reflects the sudden exchange of Joule heat to its environment.

Original language	English
Article number	061902
Journal	Applied Physics Letters
Volume	103
Issue number	6
DOIs	https://doi.org/10.1063/1.4817727
Publication status	Published - 2013 Aug 5

Bibliographical note

Funding Information:
H. L. Ju and B. S. Mun would like to thank the support by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2012R1A1A2006948 and 2012R1A1A2001745). The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Science Division, of the US Department of Energy under Contract No. DE-AC02-05CH11231 at LBNL. The microdiffraction program at the ALS on BL 12.3.2 was made possible by NSF Grant No. 0416243. This paper was supported by GIST College's 2013 GUP Research Fund.

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.4817727

Cite this

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title = "Role of joule heating effect and bulk-surface phases in voltage-driven metal-insulator transition in VO2 crystal",

abstract = "We report the characteristics of a voltage-induced metal-insulator transition (MIT) in macro-sized VO2 crystals. The square of MIT onset voltage (VCMIT2) value shows a linear dependence with the ambient temperature, suggesting that the Joule heating effect is the likely cause to the voltage-induced MIT. The combination of optical microscope images and Laue microdiffraction patterns show the simultaneous presence of a metallic phase in the bulk of the crystal with partially insulating surface layers even after the MIT occurs. A large asymmetry in the heating power just before and after the MIT reflects the sudden exchange of Joule heat to its environment.",

author = "{Simon Mun}, Bongjin and Joonseok Yoon and Mo, {Sung Kwan} and Kai Chen and Nobumichi Tamura and Catherine Dejoie and Martin Kunz and Zhi Liu and Changwoo Park and Kyungsun Moon and Honglyoul Ju",

note = "Funding Information: H. L. Ju and B. S. Mun would like to thank the support by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2012R1A1A2006948 and 2012R1A1A2001745). The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Science Division, of the US Department of Energy under Contract No. DE-AC02-05CH11231 at LBNL. The microdiffraction program at the ALS on BL 12.3.2 was made possible by NSF Grant No. 0416243. This paper was supported by GIST College's 2013 GUP Research Fund.",

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AU - Simon Mun, Bongjin

AU - Yoon, Joonseok

AU - Mo, Sung Kwan

AU - Chen, Kai

AU - Tamura, Nobumichi

AU - Dejoie, Catherine

AU - Kunz, Martin

AU - Liu, Zhi

AU - Park, Changwoo

AU - Moon, Kyungsun

AU - Ju, Honglyoul

N1 - Funding Information: H. L. Ju and B. S. Mun would like to thank the support by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2012R1A1A2006948 and 2012R1A1A2001745). The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Science Division, of the US Department of Energy under Contract No. DE-AC02-05CH11231 at LBNL. The microdiffraction program at the ALS on BL 12.3.2 was made possible by NSF Grant No. 0416243. This paper was supported by GIST College's 2013 GUP Research Fund.

PY - 2013/8/5

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N2 - We report the characteristics of a voltage-induced metal-insulator transition (MIT) in macro-sized VO2 crystals. The square of MIT onset voltage (VCMIT2) value shows a linear dependence with the ambient temperature, suggesting that the Joule heating effect is the likely cause to the voltage-induced MIT. The combination of optical microscope images and Laue microdiffraction patterns show the simultaneous presence of a metallic phase in the bulk of the crystal with partially insulating surface layers even after the MIT occurs. A large asymmetry in the heating power just before and after the MIT reflects the sudden exchange of Joule heat to its environment.

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