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Co-Occurrence of Threshold Switching and Memory Switching in \hbox {Pt}/\hbox {NbO}_{x}/\hbox {Pt} Cells for Crosspoint Memory Applications

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9 Author(s)
Xinjun Liu ; School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, Korea ; Sharif Md. Sadaf ; Myungwoo Son ; Jubong Park
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To integrate bipolar resistive switching cells into crosspoint structures, we serially connect a threshold-switching (TS) Pt/NbO2/Pt device with a memory-switching (MS) Pt/Nb2O5/ Pt device and observe the suppression of the undesired sneak current. A simpler Pt/Nb2O5/NbO2/Pt bilayer oxide device was designed; it simultaneously exhibits TS and MS. The unique device characteristics in the metal/oxide/metal structure can be directly integrated into a crosspoint memory array without the diode; this can significantly reduce the fabrication complexity.

Published in:

IEEE Electron Device Letters  (Volume:33 ,  Issue: 2 )