Speaker
Brennan Cornell
(Trent University)
Description
Chiral phonons are found in crystalline materials that break inversion symmetry or time-reversal symmetry such as the honeycomb lattice. The simple cubic lattice does not satisfy these constraints, but the (111) surface of a simple cubic can be made to do so under certain conditions. We discuss a method to break the symmetry of the simple cubic lattice, and enable the emergence of surface-confined chiral phonons corresponding with high symmetry points in the Brillouin Zone. We conclude by examining the surprisingly complex motion of the chiral phonons across a multi-layer crystal.
| Keyword-1 | Chiral Phonons |
|---|---|
| Keyword-2 | Simple Cubic Lattice |
Author
Brennan Cornell
(Trent University)
Co-author
Bill Atkinson