Physical Review B
Necessary and sufficient elastic stability conditions in various crystal systems
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Abstract
While the Born elastic stability criteria are well known for cubic crystals, there is some confusion in the literature about the form they should take for lower-symmetry crystal classes. Here we present closed form necessary and sufficient conditions for elastic stability in all crystal classes, as a concise and pedagogical reference to stability criteria in noncubic materials.
DOI: 10.1103/physrevb.90.224104 · Publisher: American Physical Society (APS)