Researchers confirm the existence of chiral phonons in a 2D material

Researchers from the DoE Lawrence Berkeley National Laboratory have proved the existence of chirac phonons - a shaking motion in the structure of 2D material that possesses a naturally occurring circular rotation. This rotation may mean that the material is promising for data-storage based on valleytronics.

Chiral Phonons in WSe2 (Berkeley Lab)

The researchers used tungsten diselenide (WSe2), a material that has an unusual ability to sustain special electronic properties that are far more fleeting in other materials. With this new discovery of the chirac phonons, the researchers believe that controlling the rotation direction could prove to be a stable mechanism to carry and store information.

The current research process resulted in a small number of these chiral phonons. The researchers now want to be able to generated a larger number of these phonons, and to learn whether vigorous agitations in the crystal can be used to flip the spin of electrons or to significantly alter the valley properties of the material.

Posted: Feb 04,2018 by Ron Mertens