title: Phonon transport in a one-dimensional harmonic chain with long-range interaction and mass disorder.
abstract: Atomic mass and interatomic interaction are the two key quantities that significantly affect the heat conduction carried by phonons. Here, we study the effects of long-range (LR) interatomic interaction and mass disorder on the phonon transport in a one-dimensional harmonic chain with up to 10^{5} atoms. We find that while LR interaction reduces the transmission of low-frequency phonons, it enhances the transmission of high-frequency phonons by suppressing the localization effects caused by mass disorder. Therefore, LR interaction is able to boost heat conductance in the high-temperature regime or in the large size regime, where the high-frequency modes are important.
authors.affiliation: Institute of High Performance Computing, A*STAR, 138632, Singapore.
authors.forename: Hangbo
authors.initials: H
authors.lastname: Zhou
authors.affiliation: Institute of High Performance Computing, A*STAR, 138632, Singapore.
authors.forename: Gang
authors.initials: G
authors.lastname: Zhang
authors.affiliation: Department of Physics, National University of Singapore, 117551, Singapore.
authors.forename: Jian-Sheng
authors.initials: JS
authors.lastname: Wang
authors.affiliation: Institute of High Performance Computing, A*STAR, 138632, Singapore.
authors.forename: Yong-Wei
authors.initials: YW
authors.lastname: Zhang