Phonon anharmonicity: a pertinent review of recent progress and perspective

Abstract

Anharmonic lattice vibrations govern the thermal dynamics in materials and present how the atoms interact and how they conduct heat. An indepth understanding of the microscopic mechanism of phonon anharmonicity in condensed systems is critical for developing better functional and energy materials. In recent years, a variety of novel behaviors in condense matters are driven by phonon anharmonic effects in some way or another, such as soft mode phase transition, negative thermal expansion, multiferroicity, ultralow thermal conductivity or high thermal resistance, and high-temperature superconductivity, etc. All these properties have endowed anharmonicity with many promising applications and provided remarkable opportunities for developing anharmonicity engineering, regulating heat transport towards excellent performance in materials. In this work, we review the recent development of the study on phonon anharmonic effect and summarize its origination, influence and mechanism, research methods, and applications. Besides, the remaining challenges, future trends, and prospects of phonon anharmonicity are also put forward.

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Cited by in corpus (10)

• Giant Anisotropic in-Plane Thermal Conduction Induced by Anomalous Phonons in Nearly-Equilaterally Structured PdSe2
• Anharmonic theory of superconductivity and its applications to emerging quantum materials
• LO-mode phonon of KCl and NaCl at 300 K by inelastic X ray scattering measurements and first principles calculations
• Matryoshka Phonon Twinning in alpha-GaN
• Determination of acoustic phonon anharmonicities via second-order Raman scattering in CuI
• Polar phonons and magnetic excitations in the antiferromagnet CoF${}_2$
• Non-Conventional Critical Behavior and Q-dependent Electron-Phonon Coupling Induced Phonon Softening in the CDW Superconductor LaPt2Si2
• Ab initio study on magnetism suppression, anharmonicity, rattling mode and superconductivity in Sc${}_{6}M$Te${}_2$ ($M$=Fe, Co, Ni)
• Neutron scattering studies of complex lattice dynamics in energy materials
• Reciprocal space temperature-dependent phonons method from ab-initio dynamics