Anomalous frequency scaling of acoustic phonon damping in freestanding nickel cavities fabricated via laser delamination
Single-shot picosecond (ps) laser-induced delamination allows for the direct generation of suspended membranes from a continuous metallic film, offering a promising platform for the control of ultrafast magnetization dynamics driven by acoustic waves. Using the picosecond-ultrasonics method, we demonstrate that long-lived low-frequency acoustic waves can be optically excited in the delaminated cavities. At the same time, higher-frequency modes above 60 GHz exhibit a surprisingly fast damping, following a scaling law incompatible with the expected attenuation mediated by phonon–phonon scattering. Comparing measurements between delaminated cavities and a benchmark nickel film in contact with the substrate, we link our findings to structural modifications of the nickel crystal induced by the delamination process.
Authors
- Vasily V. Temnov (ORCID: https://orcid.org/0000-0003-2708-5916)
- Svetlana Starikovskaia (ORCID: https://orcid.org/0000-0001-6954-7336)
- Evgeny B. Modin (ORCID: https://orcid.org/0000-0002-7403-7610)
- P. Vavassori (ORCID: https://orcid.org/0000-0002-4735-6640)
- Marco Gandolfi (ORCID: https://orcid.org/0000-0001-7700-9255)
- Nicolò Maccaferri (ORCID: https://orcid.org/0000-0002-0143-1510)
- Alba Viejo Rodríguez (ORCID: https://orcid.org/0000-0002-8808-0361)
- Daniele Brida (ORCID: https://orcid.org/0000-0003-2060-5480)
- Maria Antonietta Vincenti (ORCID: https://orcid.org/0000-0001-6698-2973)
- Tat Loon Chng (ORCID: https://orcid.org/0000-0001-7621-1750)
- Yoav Urbina Elgueta
- Andrea Rossetti (ORCID: https://orcid.org/0009-0006-8439-0043)
Institutions
- Ikerbasque (ES)
- Centre National de la Recherche Scientifique (FR)
- École Polytechnique (FR)
- University of Luxembourg (LU)
- Université Paris Cité (FR)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- Fritz Haber Institute of the Max Planck Society (DE)
- Consorzio Nazionale Interuniversitario per le Telecomunicazioni (IT)
- University Hospital of Umeå (SE)
- CIC nanoGUNE (ES)
- National Institute of Optics (IT)
- Laboratoire de Physique et Chimie des Nano-Objets (FR)
- University of Brescia (IT)
- Umeå University (SE)
Publication Details
- Journal
- Applied Physics Letters
- Published
- 2025-08-18
- DOI
- https://doi.org/10.1063/5.0263631
- Citations
- 1
- Primary Topic
- Ultrasonics and Acoustic Wave Propagation
- Type
- article
- Field-Weighted Citation Impact
- 0.86
Funders
- Wenner-Gren Stiftelserna
- European Commission
- Fonds National de la Recherche Luxembourg
- Knut och Alice Wallenbergs Stiftelse
- Vetenskapsrådet
- Ministerio de Ciencia e Innovación
- Ministero dell'Università e della Ricerca
- European Research Council
- European Regional Development Fund