Dimer rattling mode induced low thermal conductivity in an excellent acoustic conductor

Dimer rattling mode induced low thermal conductivity in an excellent acoustic conductor

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CuP2 has a puzzling thermal transport behavior, with low Ash Catchers thermal conductivity but quite large mean sound speeds.Here, the authors conduct a systematical study of the atomic structure and Bangers lattice dynamics of CuP2 to reveal the origin, finding a dimer rattling behavior.