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Weyl Phonons in Condensed Matter: A First-Principles Perspective
Guang Liu1, Peiyao Qin2, Jin Yuanjun3
1School of Physics and Electronics, Hunan University of Science and Technology, Xiangtan, Xiangtan, 411201, CHINA.
This review explores Weyl phonons, highlighting their topological and chiral properties. It categorizes Weyl points and discusses their theoretical and potential applications in phononic devices.
Area of Science:
- Condensed Matter Physics
- Topological Materials
- Phononics
Background:
- Weyl phonons possess unique topological and chiral properties, drawing significant research interest.
- Classification of Weyl points into conventional and unconventional types is based on topological charge, dispersion, and symmetry protection.
Purpose of the Study:
- To provide a comprehensive review of Weyl phonons, tracing their origins from Weyl semimetals.
- To present a curated selection of first-principles studies on various types of Weyl phonons.
- To offer insights into future research directions and applications of Weyl phonons.
Main Methods:
- Review of existing literature and theoretical studies.
- Analysis of first-principles calculations for Weyl phonon characterization.
- Classification based on topological charge, dispersion, and symmetry.
Main Results:
- Detailed discussion of conventional and unconventional Weyl phonons.
- Exploration of multi-Weyl phonons, including quadratic, triple, and charge-four types.
- Identification of key research trends and theoretical advancements.
Conclusions:
- Weyl phonons represent a rich area of topological phononics.
- Further research could unlock applications in thermal transport and phononic devices.
- This review serves as a guide to the evolving field of topological phononic structures.
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