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Resistance switching in epitaxial SrCoOx thin films

Title
Resistance switching in epitaxial SrCoOx thin films
Authors
Tambunan, Octolia T.Parwanta, Kadek J.Acharya, Susant K.Lee, Bo WhaJung, Chang UkKim, Yeon SooPark, Bae HoJeong, HuiseongPark, Ji-YongCho, Myung RaePark, Yun DanielChoi, Woo SeokKim, Dong-WookJin, HyunwooLee, SuyounSong, Seul JiKang, Sung-JinKim, MiyoungHwang, Cheol Seong
Ewha Authors
김동욱
SCOPUS Author ID
김동욱scopus
Issue Date
2014
Journal Title
APPLIED PHYSICS LETTERS
ISSN
0003-6951JCR Link1077-3118JCR Link
Citation
vol. 105, no. 6
Publisher
AMER INST PHYSICS
Indexed
SCI; SCIE; SCOPUS WOS scopus
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-delta) depending on the oxygen content. The current-voltage characteristics of the strontium cobaltite film showed that it could have a reversible insulator-tometal 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. (c) 2014 AIP Publishing LLC.
DOI
10.1063/1.4893323
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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