Sorren Warkander1,2,Yin Liu1,Lei Jin1,Jie Yao1,Junqiao Wu1,2
University of California, Berkeley1,Lawrence Berkeley National Laboratory2
Sorren Warkander1,2,Yin Liu1,Lei Jin1,Jie Yao1,Junqiao Wu1,2
University of California, Berkeley1,Lawrence Berkeley National Laboratory2
2D materials offer opportunities to tune the lattice and phonon structures, some of which are not possible in bulk materials. The moire superlattices formed in twisted bilayers are found to host rich and new electronic effects; they are expected to also have strong influence on phonon dispersion and thermal conduction that is twist angle dependent. In this work, we measure and strive to understand thermal conduction physics in these twisted stacked 2D materials, including in-plane thermal conduction moire superlattices of transition metal dichalcogenides, and cross-plane thermal conduction in GeS nanowires with a single screw dislocation in the core.