{
  "abstract": "Coherent excitation of circularly-polarized substrate phonons can drive deterministic reversal of magnetization in an adjacent magnetic layer. However, the extent to which this substrate-mediated mechanism can be generalized across different materials remains unresolved. Here, we measure and compare the spectral dependence of helicity-dependent magnetization reversal in magnetic GdFeCo layers grown on a diverse set of diamagnetic substrates. Switching is observed for all investigated substrates, spanning six point groups and several infrared-active transverse-optical phonon symmetries. While the switching spectra broadly overlap with the Reststrahlen bands, their maxima are systematically shifted to wavelengths shorter than the corresponding transverse-optical phonon resonances. This spectral mismatch shows that substrate absorption alone does not determine the switching efficiency. Transfer-matrix calculations show that strong absorption concentrates energy deposition near the substrate interface, providing a possible source of local heating that could suppress magnetization reversal. Our results reveal the broad applicability of substrate-mediated phononic switching while showing that its efficiency is governed by the full optical response of the heterostructure rather than substrate absorption alone.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.05064",
  "author_total": 6,
  "authors": [
    {
      "name": "F. G. N. Fennema"
    },
    {
      "name": "H. Damas"
    },
    {
      "name": "H. Yoshikawa"
    },
    {
      "name": "A. Tsukamoto"
    },
    {
      "name": "C. S. Davies"
    },
    {
      "name": "A. Kirilyuk"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2cwvvzdwnm0ve.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.05064",
  "fulltext_url": null,
  "id": "2cwvvzdwnm0ve",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.05064",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
    [
      "openalex",
      "3107|Magnetic properties of thin films"
    ]
  ],
  "openalex": "W7211884187",
  "pdf_url": "https://arxiv.org/pdf/2609.05064",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2cwvvzdwnm0ve.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:14Z",
      "native_id": "2609.05064",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.05064"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Generalized Helicity-Dependent Magnetization Switching via Substrate Phonons",
  "title_text": "Generalized Helicity-Dependent Magnetization Switching via Substrate Phonons",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:14Z",
  "url": "https://research.draconitic.com/paper/2cwvvzdwnm0ve",
  "venue": "arXiv",
  "versions": []
}