%0 Journal Article
%T Valley optomechanics in a monolayer semiconductor
%J -
%D 2019
%R https://doi.org/10.1038/s41566-019-0428-0
%X Interfacing nanomechanics with photonics and charge/spin-based electronics has transformed information technology and facilitated fundamental searches for the quantum-to-classical transition1,2,3. Utilizing the electron valley degree of freedom as an information carrier, valleytronics has recently emerged as a promising platform for developments in computation and communication4,5,6,7. Thus far, explorations of valleytronics have focused on optoelectronic and magnetic means8,9,10,11,12,13,14,15,16. Here, we realize valley¨Cmechanical coupling in a resonator made of the monolayer semiconductor MoS2 and transduce valley information into mechanical states. The coupling is achieved by exploiting the magnetic moment of valley carriers with a magnetic field gradient. We optically populate the valleys and observe the resulting mechanical actuation using laser interferometry. We are thus able to control the valley¨Cmechanical interaction by adjusting the pump-laser light, the magnetic field gradient and temperature. Our work paves the way for realizing valley-actuated devices and hybrid valley quantum systems
%U https://www.nature.com/articles/s41566-019-0428-0