A Fundamental Analysis of Nano-Crossbars with Non-Linear Switching Materials and its Impact on TiO2 as a Resistive Layer

While materials with a linear IV-characteristic yield in a practically unusable voltage swing when used in crossbar arrays, materials with a nonlinear IV-curve were expected to yield better results. With a fundamental analytical approach, we can show that the gain is theoretically limited to the squ...

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Bibliographic Details
Main Authors: Flocke, A., Noll, T.G., Kugeler, C., Nauenheim, C., Waser, R.
Format: Conference Proceeding
Language:English
Subjects:
Computer architecture
Electrodes
Materials
Microprocessors
Resistors
Switches
Wires
Online Access:Request full text
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Summary:While materials with a linear IV-characteristic yield in a practically unusable voltage swing when used in crossbar arrays, materials with a nonlinear IV-curve were expected to yield better results. With a fundamental analytical approach, we can show that the gain is theoretically limited to the square root of the number of word lines used in the crossbar. Furthermore the degree of nonlinearity must not exceed a certain value, otherwise the voltage swing decreases. TiO 2 with its nonlinear IV-characteristic outperforms any possible material with a linear IV-characteristic but the voltage swing for large crossbars is still below 10%V DD and would demand for high costly sense amplifiers.
ISSN:1944-9399
1944-9380
DOI:10.1109/NANO.2008.101