Observation of interplay between phonon chirality and electronic band topology
Open accessAbstract
The recently demonstrated chiral modes of lattice motion carry angular momentum and therefore directly couple to magnetic fields. Notably, their magnetic moments are predicted to be strongly influenced by electronic contributions. Here, we have studied the magnetic response of transverse optical phonons in a set of Pb 1− x Sn x Te films, which is a topological crystalline insulator for x > 0.32 and has a ferroelectric transition at an x -dependent critical temperature. Polarization-dependent terahertz magnetospectroscopy measurements revealed Zeeman splittings and diamagnetic shifts, demonstrating a large phonon magnetic moment. Films in the topological phase exhibited phonon magnetic moment values that were larger than those in the topologically trivial samples by two orders of magnitude. Furthermore, the sign of the effective phonon g -factor was opposite in the two phases, a signature of the topological transition according to our model. These results strongly indicate the existence of interplay between the magnetic properties of chiral phonons and the topology of the electronic band structure.
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A recent theoretical work found that in semimetals and small-gap (tens of millielectronvolts) insulators, a four orders of magnitude enhancement of the phonon magnetic moment can be expected.
“A recent theoretical work29 found that in semimetals and small-gap (tens of millielectronvolts) insulators, a four orders of magnitude enhancement of the phonon magnetic moment can be expected30–32.”
From Terahertz electric-field-driven dynamical multiferroicity in SrTiO3 (2024) · cites this paper as [30]
The Results section (page unavailable) reports enhanced phonon magnetic moments in topological Pb₁₋ₓSnₓTe films and notes a comparable value in a Dirac semimetal. It reports an increase of two orders of magnitude, however, not a theoretical prediction of four orders of magnitude for semimetals and small-gap insulators. (LLM, conf=0.85)
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References 74 · Cited by 65
Research works printed but not linked: 4
- [8]D. M. Juraschek, T. Neuman, P. Narang, Giant effective magnetic fields from optically driven chiral phonons in 4f paramagnets. Phys. Rev. Res. 4, 013129 (2022).
- [24]R. M. Geilhufe, V. Jurǐić, S. Bonetti, J.-X. Zhu, A. V. Balatsky, Dynamically induced magnetism in KTaO3. Phys. Rev. Res. 3, L022011 (2021).
- [60]C. Kittel, Introduction to Solid State Physics (John Wiley & Sons, ed. 8, 2005).
- [75]A. K. Okazaki, “Investigation of the magnetotransport properties in the crystalline topological insulator lead tin telluride,” thesis, INPE, São José dos Campos (2019).
- Authors
- Hernandez, F. G. G., Baydin, A., Chaudhary, S., Tay, F., Katayama, I., Takeda, J., Nojiri, H., Okazaki, A. K., Rappl, P. H. O., Abramof, E., Rodriguez-Vega, M., Fiete, G. A., & Kono, J.
- Affiliations
- Instituto de Física, Universidade de São Paulo, São Paulo, SP 05508-090, Brazil.
- Rice University (US)
- Northeastern University (US)
- Yokohama National University (JP)
- Tohoku University (JP)
- Instituto Nacional de Pesquisas Espaciais (BR)
- Corresponding author
- Baydin, Andrey
- Kono, Junichiro
- ORCID
- Venue
- Science Advances
- Published
- 2023-12-15
- Volume
- 9
- Issue
- 50
- Pages
- eadj4074-eadj4074
- ISSN
- 2375-2548 (ISSN-L)
- PMC
- PMC10848715
- OpenAlex
- W4389778109
- Cited by
- 65
- References
- 74
- Citations by year
- 2026: 21 · 2025: 25 · 2024: 17 · 2023: 2
- FWCI
- 7.55
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- cc-by-nc
- Locations
- Science Advances (publishedVersion, cc-by-nc)
- PubMed Central (publishedVersion, cc-by-nc)
- PubMed (publishedVersion)
- Institutional Repositories DataBase (IRDB) (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- Yokohama National University Repository (Yokohama National University) (submittedVersion, cc-by-nc-nd)
- Figshare (submittedVersion, public-domain)
- Biblioteca Digital da Memória Científica do INPE (National Institute for Space Research) (submittedVersion)
- arXiv (Cornell University)
- Funders
- National Science Foundation (1720595, 2114825)
- Alexander von Humboldt-Stiftung
- Fundação de Amparo à Pesquisa do Estado de São Paulo (18/06142-5, 2015/, 23/04245-0, 307192/2021-0, 409245/2022-4, 307737/2020-9)
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (409245/2022-4, 307192/2021, 2018/06142-5, 307192/2021–0, 2023/04245-0, 2015-16191-5)
- Materials Research Science and Engineering Center, Harvard University (DMR-1720595)
- Japan Society for the Promotion of Science (20H05662)
- Division of Materials Research (DMR 1720595, DMR-2114825, 1720595)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Topological Materials and Phenomena
- Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Advanced Condensed Matter Physics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Magnetic properties of thin films
- Keywords
- phonon chirality, topological crystalline insulators, lead tin telluride, transverse optical phonons, Zeeman splitting, diamagnetic shift, ferroelectric phase transition, topological phase transition
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