journal article·2026

Optical probing of magnons and phonons in Ni 80 Fe 20 nanodot arrays

Arundhati Adhikari, Piotr Graczyk, Avinash K. Chaurasiya, Sayanti Mondal, Jarosław W. Kłos, Anjan Barman

Nanoscale· Volume 18· Issue 8
Publisher page

Abstract

Control of collective spin excitations by static or dynamic strain is an emerging phenomenon that requires in-depth understanding for the design of future spin-wave-regulated devices. Here, we explore mutually interacting spin waves and acoustic wave modes in addition to a few non-interactive modes through all optical excitation in ordered arrays of Ni80Fe20 nanomagnets. The acoustic wave originating from elastic deformation resonantly couples to the spin wave via the magnetoelastic effect at their overlapping frequency. We demonstrate that the choice of the lattice type in which the magnetic nanodots are arranged is crucial for the observation of the magnetoelastic interaction. Therefore, this study shows that the simultaneous existence of elastic wave and spin wave offer ingeniously advantageous features to pave the way towards energy-efficient magnetoacoustic devices.
Source: europepmc · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Magnetic properties of thin films · Quantum and electron transport phenomena · Chemical and Physical Properties of Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Condensed Matter and Materials Physics, S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700106, India

Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179, Poznan, Poland

Department of Physics, University of Gothenburg, Box 100, 405 30 Gothenburg, Sweden

ISQI, Faculty of Physics and Astronomy, Adam Mickiewicz University Poznan, Uniwersytetu Poznañskiego 2, 61-614, Poznañ, Poland

Department of Physics, School of Natural Sciences, Shiv Nadar Institution of Eminence (Delhi NCR), Dadri, UP 201314, India

Funding

Department of Science and Technology, Ministry of Science and Technology · Narodowym Centrum Nauki

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