Abstract
We theoretically investigate the valley precession and valley polarization in graphene under inter-valley coupling. Our results show that the inter-valley coupling can induce valley polarization in graphene and also precess valleys in real space in a manner similar to the Rashba spin–orbit interaction rotating spins. Moreover, using strain modulation, we can achieve high valley polarization with large valley-polarized currents. These findings provide a new way to create and manipulate valley polarization in graphene.
© Wu, Q.-P., Liu, Z.-F., Chen, A.-X., Xiao, X.-B., Zhang, H., & Miao, G.-X. (2017). Valley precession and valley polarization in graphene with inter-valley coupling. Journal of Physics: Condensed Matter, 29(39), 395303. https://doi.org/10.1088/1361-648x/aa80cf