1. Department of Physics and Centre for Computational Science and Engineering, National University of Singapore, Singapore 117546, Singapore
2. Institute of High Performance Computing, A*STAR, Singapore 138632, Singapore
3. NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Kent Ridge 119620, Singapore
4. Center for Phononics and Thermal Energy Science, School of Physics Science and Engineering, Tongji University, 200092 Shanghai, China