A few years ago, I was fascinated by the news of the discovery of a new Carbon allotrope based on first-principle simulations by using USPEX software described [here][1]. Or particularly this article:

**Zhu Q., Oganov A.R., Salvado M., Pertierra P., Lyakhov A.O. (2011). Denser than diamond:ab initio search for superdense carbon allotropes. Phys. Rev. B83, 193410**, [download here][2].


  [1]: https://uspex-team.org/en/research/materials
  [2]: https://uspex-team.org/static/file/Zhu-carbon-2011.pdf