Resistance switching in epitaxial SrCoOx thin films

Octolia T. Tambunan; Kadek J. Parwanta; Susant K. Acharya; Bo Wha Lee; Chang Uk Jung; Yeon Soo Kim; Bae Ho Park; Huiseong Jeong; Ji Yong Park; Myung Rae Cho; Yun Daniel Park; Woo Seok Choi; Dong Wook Kim; Hyunwoo Jin; Suyoun Lee; Seul Ji Song; Sung Jin Kang; Miyoung Kim; Cheol Seong Hwang

doi:10.1063/1.4893323

Resistance switching in epitaxial SrCoO_x thin films

Octolia T. Tambunan, Kadek J. Parwanta, Susant K. Acharya, Bo Wha Lee, Chang Uk Jung, Yeon Soo Kim, Bae Ho Park, Huiseong Jeong, Ji Yong Park, Myung Rae Cho, Yun Daniel Park, Woo Seok Choi, Dong Wook Kim, Hyunwoo Jin, Suyoun Lee, Seul Ji Song, Sung Jin Kang, Miyoung Kim, Cheol Seong Hwang

Department of Physics

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

47 Scopus citations

Abstract

We observed bipolar switching behavior from an epitaxial strontium cobaltite film grown on a SrTiO₃ (001) substrate. The crystal structure of strontium cobaltite has been known to undergo topotactic phase transformation between two distinct phases: insulating brownmillerite (SrCoO_2.5) and conducting perovskite (SrCoO_3- _δ) depending on the oxygen content. The current-voltage characteristics of the strontium cobaltite film showed that it could have a reversible insulator-to-metal transition triggered by electrical bias voltage. We propose that the resistance switching in the SrCoO_x thin film could be related to the topotactic phase transformation and the peculiar structure of SrCoO_2.5.

Original language	English
Article number	063507
Journal	Applied Physics Letters
Volume	105
Issue number	6
DOIs	https://doi.org/10.1063/1.4893323
State	Published - 11 Aug 2014

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Tambunan, O. T., Parwanta, K. J., Acharya, S. K., Lee, B. W., Jung, C. U., Kim, Y. S., Park, B. H., Jeong, H., Park, J. Y., Cho, M. R., Park, Y. D., Choi, W. S., Kim, D. W., Jin, H., Lee, S., Song, S. J., Kang, S. J., Kim, M., & Hwang, C. S. (2014). Resistance switching in epitaxial SrCoO_x thin films. Applied Physics Letters, 105(6), Article 063507. https://doi.org/10.1063/1.4893323

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title = "Resistance switching in epitaxial SrCoOx thin films",

abstract = "We observed bipolar switching behavior from an epitaxial strontium cobaltite film grown on a SrTiO3 (001) substrate. The crystal structure of strontium cobaltite has been known to undergo topotactic phase transformation between two distinct phases: insulating brownmillerite (SrCoO2.5) and conducting perovskite (SrCoO3- δ) depending on the oxygen content. The current-voltage characteristics of the strontium cobaltite film showed that it could have a reversible insulator-to-metal transition triggered by electrical bias voltage. We propose that the resistance switching in the SrCoOx thin film could be related to the topotactic phase transformation and the peculiar structure of SrCoO2.5.",

author = "Tambunan, {Octolia T.} and Parwanta, {Kadek J.} and Acharya, {Susant K.} and Lee, {Bo Wha} and Jung, {Chang Uk} and Kim, {Yeon Soo} and Park, {Bae Ho} and Huiseong Jeong and Park, {Ji Yong} and Cho, {Myung Rae} and Park, {Yun Daniel} and Choi, {Woo Seok} and Kim, {Dong Wook} and Hyunwoo Jin and Suyoun Lee and Song, {Seul Ji} and Kang, {Sung Jin} and Miyoung Kim and Hwang, {Cheol Seong}",

year = "2014",

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day = "11",

doi = "10.1063/1.4893323",

language = "English",

volume = "105",

journal = "Applied Physics Letters",

issn = "0003-6951",

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T1 - Resistance switching in epitaxial SrCoOx thin films

AU - Tambunan, Octolia T.

AU - Parwanta, Kadek J.

AU - Acharya, Susant K.

AU - Lee, Bo Wha

AU - Jung, Chang Uk

AU - Kim, Yeon Soo

AU - Park, Bae Ho

AU - Jeong, Huiseong

AU - Park, Ji Yong

AU - Cho, Myung Rae

AU - Park, Yun Daniel

AU - Choi, Woo Seok

AU - Kim, Dong Wook

AU - Jin, Hyunwoo

AU - Lee, Suyoun

AU - Song, Seul Ji

AU - Kang, Sung Jin

AU - Kim, Miyoung

AU - Hwang, Cheol Seong

PY - 2014/8/11

Y1 - 2014/8/11

N2 - We observed bipolar switching behavior from an epitaxial strontium cobaltite film grown on a SrTiO3 (001) substrate. The crystal structure of strontium cobaltite has been known to undergo topotactic phase transformation between two distinct phases: insulating brownmillerite (SrCoO2.5) and conducting perovskite (SrCoO3- δ) depending on the oxygen content. The current-voltage characteristics of the strontium cobaltite film showed that it could have a reversible insulator-to-metal transition triggered by electrical bias voltage. We propose that the resistance switching in the SrCoOx thin film could be related to the topotactic phase transformation and the peculiar structure of SrCoO2.5.

AB - We observed bipolar switching behavior from an epitaxial strontium cobaltite film grown on a SrTiO3 (001) substrate. The crystal structure of strontium cobaltite has been known to undergo topotactic phase transformation between two distinct phases: insulating brownmillerite (SrCoO2.5) and conducting perovskite (SrCoO3- δ) depending on the oxygen content. The current-voltage characteristics of the strontium cobaltite film showed that it could have a reversible insulator-to-metal transition triggered by electrical bias voltage. We propose that the resistance switching in the SrCoOx thin film could be related to the topotactic phase transformation and the peculiar structure of SrCoO2.5.

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U2 - 10.1063/1.4893323

DO - 10.1063/1.4893323

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SN - 0003-6951

VL - 105

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 6

M1 - 063507

ER -

Resistance switching in epitaxial SrCoOx thin films

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Resistance switching in epitaxial SrCoO_x thin films