Auxeticity of cubic materials: The role of repulsive core interaction |
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| Authors: | AC Brańka KW Wojciechowski |
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| Institution: | 1. Gdansk University of Technology, Gdansk, Poland;2. Institute of Molecular Physics, Polish Academy of Sciences, Poznan, Poland;3. University of Athens, Athens,Greece |
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| Abstract: | Possible elastic response of anisotropic materials to uniaxial stretching is discussed. For cubic symmetry regions of different auxetic behavior are indicated and various solid structures located on elastic moduli maps. The elastic properties of two model molecular systems, the Gaussian-core model and soft-sphere solids are investigated. A generic mechanism leading to auxetic behavior in cubic materials is suggested. |
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