Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 20, Issue 6, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/20/6/064210
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Ab initio methods allow a more or less straightforward prediction of numerous physical properties of solids, but require the knowledge of their crystal structure. The evolutionary algorithm USPEX, developed by us in 2004-2006, enables reliable prediction of the stable crystal structure without relying on any experimental data. Numerous tests (mostly for systems with up to 28 atoms in the unit cell, and a few tests with up to 128 atoms/cell) showed a success rate of nearly 100%. USPEX has resulted in a number of predictions of hitherto unknown stable structures. We give a short overview of the method, introducing some new developments and results, and discuss a few alternative approaches. The method is illustrated by a test on an 80 atom supercell of MgSiO3 and by the search for new materials with compositions Al13K and Al12C.
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