Journal
APPLIED PHYSICS LETTERS
Volume 104, Issue 14, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4870813
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Funding
- National 973 Projects of China [2011CB922101]
- Natural Science Foundation of China [51031004, 51301084, 51272078]
- Natural Science Foundation of Jiangsu and Guangdong, China [BK20130576, S2012010008124]
- Program for Changjiang Scholars and Innovative Research Team in University, China [IRT1243]
- Hong Kong Research Grant Council [PolyU 514512]
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The relationship between the bipolar resistive switching and the polarization reversal is investigated at various temperatures in the Au/BiFeO3/SrRuO3 structure. It is found that the polarization-induced barrier variation in the Au/BiFeO3 and BiFeO3/SrRuO3 junctions decreases with decreasing temperature. This explains why the resistance-switching ratio decreases with decreasing temperature below 323 K and gives evidence that the polarization modulates the resistance state of the Au/BiFeO3/SrRuO3 structure. Besides, the oxygen vacancies migration and/or the carrier trapping/detrapping mechanisms are also suggested to play a very important role in the resistive switching behavior in this structure as the temperature goes above 323 K. (C) 2014 AIP Publishing LLC.
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