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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2026
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| Online Access: | https://arxiv.org/abs/2602.00323 |
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| _version_ | 1866911483398455296 |
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| author | Dai, Jinghang Tian, Zhiting |
| author_facet | Dai, Jinghang Tian, Zhiting |
| contents | In this commentary, we clarify that the Landauer formula is not limited to the phonon gas model. It is fundamentally more general and applies to both particle- and wave-based descriptions of phonons, provided the transmission function is well defined. In the harmonic regime, the phonon transmission function and the resulting Landauer expression for heat current are exact. They can be rigorously derived using the atomistic Green's function method, which treats phonons as waves and does not require phonon dispersion in the interface region. In short, the Landauer framework remains valid for ideal, disordered, and defective interfaces, as long as an appropriate transmission function is used. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_00323 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | On the Landauer formula in interfacial thermal transport Dai, Jinghang Tian, Zhiting Mesoscale and Nanoscale Physics In this commentary, we clarify that the Landauer formula is not limited to the phonon gas model. It is fundamentally more general and applies to both particle- and wave-based descriptions of phonons, provided the transmission function is well defined. In the harmonic regime, the phonon transmission function and the resulting Landauer expression for heat current are exact. They can be rigorously derived using the atomistic Green's function method, which treats phonons as waves and does not require phonon dispersion in the interface region. In short, the Landauer framework remains valid for ideal, disordered, and defective interfaces, as long as an appropriate transmission function is used. |
| title | On the Landauer formula in interfacial thermal transport |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2602.00323 |