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Effect of Wet Cleanings on GST Surface: XPS Characterization

GST is an alloy composed by Ge, Sb, Te whose importance is increasing more and more in semiconductors manufacturing due to its usage in Phase Change Memories (PCM) architecture, as a charge storage element. As a consequence its integration in PCM architectures requires a deeper understanding of the effect that commonly used wet cleanings may have on the surface of the alloy.