Emerging theory and phenomena in thermal conduction: A selective review

Abstract

Recently, emerging phonon phenomena have been discovered and rapidly developed, which have become an active hot research topic. In this review article, we present state-of-the-art advances in several fascinating phonon transport phenomena. First, we summarize the recent progress on the wave nature of phonons, including phonon coherence and its effects on thermal conductivity and the topological properties of phonons. Then, we discuss the particle nature of phonons, including the weak coupling of phonons and the high-order phonon anharmonicity. Finally, we present the summary and a brief outlook. This review presents the advanced understanding of some emerging phonon phenomena in solid materials, which provides new opportunities for further advancement in a wide variety of applications.

Predicting lattice thermal conductivity via machine learning: a mini review

“…To have a fast understanding, Table 1 provides the training and testing sets, the input features, and the adopted algorithms of representative ML works in recent 5 years. With the increasing growth of big data and accelerated development of artificial intelligence, it is expected that ML would become a major scientific paradigm for accurately predicting κ L , and more ML models or descriptors could be emerged to give physical insights into different mechanisms to manipulate κ L , such as phonon coherence, weak coupling of phonons, and high-order phonon anharmonicity 62 .…”

Strain Tunable Thermoelectric Material: Janus ZrSSe Monolayer

“…Young’s modulus decreases with increasing tensile strain. The small Young’s modulus represents a weak Zr–Se interaction, which may lead to a poor phonon thermal transport property according to a simple relationship: k normall ∼ Y . , …”

Regulating the thermal conductivity of monolayer MnPS3 by a magnetic phase transition

“…6 Recently, the impact of the four-phonon scattering process on the thermal conductivity of solids have attracted extensive research attention. 35,36 Compared with the relaxation time of phonons in the low frequency range, the relaxation time of phonons in the high frequency range (i.e., optical modes) will be reduced more significantly by the four-phonon scattering processes. 37 For PM/AFM/FM MnPS 3 , the thermal conductivity contributed by the optical phonons is low.…”