Publication Date:
2016-09-08
Description:
Author(s): Liang-Feng Huang, Xue-Zeng Lu, and James M. Rondinelli We identify a quasi-two-dimensional (quasi-2D) phonon mode in the layered-perovskite Ca 3 Ti 2 O 7 , which exhibits an acoustic branch with quadratic dispersion. Using first-principles methods, we show this mode exhibits atomic displacements perpendicular to the layered [ CaTiO 3 ] 2 blocks comprising the str… [Phys. Rev. Lett. 117, 115901] Published Wed Sep 07, 2016
Keywords:
Condensed Matter: Structure, etc.
Print ISSN:
0031-9007
Electronic ISSN:
1079-7114
Topics:
Physics
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