A thin SiGe layer is provided as an additional lower gate electrode layer and is arranged between a thin gate oxide and a gate electrode layer, preferably of polysilicon. The SiGe layer can be etched selectively to the gate electrode and the gate oxide and is laterally removed adjacent the source/drain regions in order to form recesses, which are subsequently filled with a material that is appropriate for charge-trapping. The device structure and production method are appropriate for an integration scheme comprising local interconnects of memory cells, a CMOS logic periphery and means to compensate differences of the layer levels in the array and the periphery.

 
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