Phonon Softening and Elastic Instabilities in the Cubic-to-Orthorhombic Structural Transition of CsH

Details Phonon Softening and Elastic Instabilities in the Cubic-to-Orthorhombic Structural Transition of CsH Phonon Softening and Elastic Instabilities in the Cubic-to-Orthorhombic Structural Transition of CsH

1996-10-21

arxiv.org/abs/cond-mat/9610149v2

Physics

Condensed Matter

Materials Science

5 pages, latex file, 5 figures

Scientific paper

10.1103/PhysRevLett.78.4958

The cubic-to-orthorhombic structural transition occurring in CsH at a pressure of about 17 GPa is studied by ab initio calculations. The relative stability of the competing structures and the transition pressure are correctly predicted. We show that this pressure-induced first-order transition is intimately related to a displacive second-order transition which would occur upon application of a shear strain to the (110) planes. The resulting instability is rationalized in terms of the pressure-induced modifications of the electronic structure.

Affiliated with

Also associated with

No associations

Rating

Phonon Softening and Elastic Instabilities in the Cubic-to-Orthorhombic Structural Transition of CsH does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Phonon Softening and Elastic Instabilities in the Cubic-to-Orthorhombic Structural Transition of CsH, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phonon Softening and Elastic Instabilities in the Cubic-to-Orthorhombic Structural Transition of CsH will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-12049