We have investigated the interfacial contact properties of the CMOS compatible electrode materials W, TiW, Ta, TaN and TiN to doped-Sb2Te phase change material (PCM). This interface is characterized both in the amorphous and in the crystalline state of the doped-Sb2Te. The electrical nature of the interface is characterized by contact resistance measurements and is expressed in terms of specific interfacial contact resistance (ϿC). These measurements are performed on four-terminal Kelvin Resistor test structures. Knowledge of the ϿC is useful for selection of the electrode in the integration and optimization of the phase change memory cells.
|Publisher||Cambridge University Press|
|Conference||MRS Spring Meeting 2011|
|Period||25/04/11 → 29/04/11|