Analyzing the Impact of Grain Boundary Scattering on the Metal Resistivity: First-Principles Study of Symmetric Tilt Grain Boundaries in Copper
Using first-principles density functional theory based transport calculations, we evaluate the grain boundary reflection coefficients in Copper (Cu). We find that the grain boundary reflections can significantly enhance the metal resistivity in Cu interconnects. Later, using the Mayadas-Shatzkes model, we predict the possible enhancement of the metal resistivity due to the grain boundary scattering. These results identify the critical role of grain boundary reflection in polycrystalline Cu. Further, the implications of the grain boundary resistance for shrinking interconnect dimensions are discussed.
- 3.Home | QuantumWise. [Online]. Available: http://quantumwise.com/