Soft Modes at the Stacking Faults in SiC Crystals

Details Soft Modes at the Stacking Faults in SiC Crystals Soft Modes at the Stacking Faults in SiC Crystals

2007-07-20

arxiv.org/abs/0707.2999v1

Physics

Condensed Matter

Materials Science

Scientific paper

We use first-principles calculations based on density functional theory to determine and understand the driving force of the observed stacking fault expansion in SiC. We verify the suggestion based on recent experiments that the free energy difference between the faulted and the perfect structures is responsible for this expansion, and show that its origin lies in a large entropy associated with soft vibrational modes of the faulted SiC structure. These soft modes involve shearing of SiC on a long length-scale and are absent in related group IV semiconductors, such as Si, Ge and C.

Affiliated with

Also associated with

No associations

Rating

Soft Modes at the Stacking Faults in SiC Crystals 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 Soft Modes at the Stacking Faults in SiC Crystals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Soft Modes at the Stacking Faults in SiC Crystals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-398394