The bulk-sensitive Ce 4f spectral weights of various Ce compounds including CeFe2, CeNi2, and CeSi2 were obtained with the resonant photoemission technique at the Ce 3d-edge. We found the lineshapes change significantly with the small change of the incident photon energy. Detailed analysis showed that this phenomenon results primarily from the Auger transition between

Auxetic polymeric materials are a special kind of materials that exhibit negative Poisson’s ratio (NPR) effect. They get fatter when stretched and thinner when compressed. Auxetic behavior is a scaleindependent property which can be achieved at different structural levels from molecular to macroscopic levels. The internal structure of material plays an important role in obtaining auxetic effect...