Abstract
Comment on X. Q. Liu et al., Phys. Rev. Lett. 106, 025501 (2011).. The author of the Letter offers a Reply.
- Received 24 March 2011
DOI:https://doi.org/10.1103/PhysRevLett.108.239601
© 2012 American Physical Society
Comment on “New Structural Picture of the Phase-Change Alloy”
Jean-Yves Raty, Christophe Bichara, Riccardo Mazzarello, Pascal Rausch, Peter Zalden, and Matthias Wuttig
Phys. Rev. Lett. 108, 239601 – Published 5 June 2012
Images
Figure 1
Distributions of the atoms displacements respective to their initial positions (r0), for the different species, averaged over the last 5 ps of an MD simulation at 300 K, for the RS structure (black curves) and the VtGC model proposed by Liu et al. (full grey curve: octahedral sites, grey dashed curve: tetrahedral Ge sites). In the VtGC case the germanium atoms that were originally on tetrahedral sites move up to 3 Å away from the tetrahedral r0 position. This value corresponds to the distance between the tetrahedral r0 position and a neighboring octahedral (RS) site.Reuse & Permissions