Chiral phonons
Artikel i vetenskaplig tidskrift, 2025
A rapidly increasing body of work reporting phenomena associated with lattice vibrations carrying angular momentum has led to the emergence of the field of chiral phonons. Some of these properties, such as the phonon magnetic moment, also occur in achiral phonons that are circularly or elliptically polarized, while the presence of chirality has additional implications for the types of interaction allowed between the phonons and light, electrons and other quasiparticles. In this Perspective we introduce a framework for classifying phonons with angular momentum, and provide illustrations of the different types using examples from the recent literature. Specifically, we suggest the term ‘axial phonon’ to encompass all phonons that carry angular momentum, real or pseudo, and reserve the term ‘chiral phonon’ for those phonons that break improper rotational symmetry. We hope that this scheme provides clarification on the matter of phonon chirality and will serve as a guide for future research.
Författare
D. M. Juraschek
Technische Universiteit Eindhoven
Tel Aviv University
Richard Matthias Geilhufe
Chalmers, Fysik, Kondenserad materie- och materialteori
Hanyu Zhu
Rice University
Martina Basini
Eidgenössische Technische Hochschule Zürich (ETH)
Peter Baum
Universität Konstanz
Andrey Baydin
Rice University
Swati Chaudhary
University of Tokyo
Michael Fechner
Max-Planck-Gesellschaft
Benedetta Flebus
Boston College
Gael Grissonnanche
Centre national de la recherche scientifique (CNRS)
A. Kirilyuk
Radboud Universiteit
Mikhail Lemeshko
Institute of Science and Technology Austria
Sebastian F. Maehrlein
Max-Planck-Gesellschaft
Helmholtz-Gemeinschaft Deutscher Forschungszentren
Technische Universität Dresden
Maxime Mignolet
Universite de Liège
European Theoret Spect Facil ETSF
Fonds de la Recherche Scientifique
Shuichi Murakami
Institute of Science Tokyo
Qian Niu
University of Science and Technology of China
Ulrich Nowak
Universität Konstanz
Carl P. Romao
Eidgenössische Technische Hochschule Zürich (ETH)
Habib Rostami
University of Bath
Takuya Satoh
Institute of Science Tokyo
National Institutes of Natural Sciences
Nicola Spaldin
Eidgenössische Technische Hochschule Zürich (ETH)
Hiroki Ueda
Paul Scherrer Institut
Lifa Zhang
Nanjing Normal University
Nature Physics
1745-2473 (ISSN) 17452481 (eISSN)
Vol. In PressÖvergående kiral-inducerade magnetiska effekter
Knut och Alice Wallenbergs Stiftelse (2023.0087), 2024-07-01 -- 2029-06-30.
Interaktion mellan kirala fononer och spinn
Vetenskapsrådet (VR) (2022-03350), 2023-01-01 -- 2026-12-31.
Ämneskategorier (SSIF 2025)
Den kondenserade materiens fysik
DOI
10.1038/s41567-025-03001-9