Physics – Condensed Matter – Materials Science
Scientific paper
2007-09-27
Phys. Rev. Lett. 100, 149701 (2008)
Physics
Condensed Matter
Materials Science
2 pages, no figures
Scientific paper
10.1103/PhysRevLett.100.149701
In a recent Letter [N.A. Pertsev and H. Kohlstedt, Phys. Rev. Lett. 98, 257603 (2007)] the authors claim that "even nanoscale capacitors and tunnel junctions may have out of plane polarization sufficient for memory applications." Here we show in an elementary way that this conclusion is not substantiated by their calculations and that they should have come to the opposite conclusion within their approximations.
Bratkovsky Alexander M.
Levanyuk A. P.
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