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JOURNAL OF APPLIED PHYSICS
Volume 110, Issue 5, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3626816
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We report that the charged oxygen vacancies are the key element to induce a resistive switching in copper oxide resistive devices and an external bias drifts the charged vacancies at the metal/oxide Schottky interface causing the switching phenomenon by in situ transmission electron microscopy. Notable results are that the switching polarity is determined by the charge of the vacancies and that the voltage inducing non-volatile switching behavior originates from the Schottky barrier at the interface, which clarifies the origin of resistive switching and provides a design strategy for oxide resistive devices. (C) 2011 American Institute of Physics. [doi:10.1063/1.3626816]
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