{
  "abstract": "Angular-momentum transport provides a pathway for controlling energy flow in solids beyond conventional charge-based mechanisms. Although spin currents are known to mediate spin-caloritronic phenomena such as the spin Peltier effect (SPE), the role of orbital angular momentum (OAM) in heat transport remains largely unexplored. Here, we demonstrate OAM-driven temperature modulation via the SPE in yttrium-iron-garnet/Pt/CuO x heterostructures. Using wedge-shaped CuO x layers combined with spatially resolved active thermal measurement techniques, we map the continuous thickness dependence and quantitatively disentangle the spin- and orbital-current-mediated contributions within a single device. The orbital-mediated component exhibits a pronounced maximum at an intermediate thickness, revealing a characteristic length scale for interfacial OAM generation and propagation at the Cu/CuO x interface. These results provide direct experimental evidence that charge-current-driven OAM can drive SPE-induced temperature modulation, establishing interfacial orbital processes as an additional channel for heat transport and providing a pathway toward spin-orbit caloritronics.",
  "abstract_shown": true,
  "affiliations": [
    "National Institute for Materials Science, Tsukuba 305-0047, Japan.",
    "Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan."
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Sang J. Park",
      "orcid": "0000-0003-1684-4876"
    },
    {
      "affs": [
        1
      ],
      "name": "Tsuneyoshi Kan"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Takamasa Hirai",
      "orcid": "0000-0002-5577-8018"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Ken-ichi Uchida",
      "orcid": "0000-0001-7680-3051"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3b8wc14wf0ey6.bib",
  "cited_by": 0,
  "doi": "10.1126/sciadv.aej1838",
  "fulltext_url": null,
  "id": "3b8wc14wf0ey6",
  "issns": [
    "2375-2548"
  ],
  "landing_url": "https://www.science.org/doi/10.1126/sciadv.aej1838",
  "language": null,
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3107|Magnetic properties of thin films"
    ]
  ],
  "openalex": "W7164538825",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-02",
  "publisher": "American Association for the Advancement of Science (AAAS)",
  "ris": "https://research.draconitic.com/paper/3b8wc14wf0ey6.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:41Z",
      "native_id": "10.1126/sciadv.aej1838",
      "source": "crossref",
      "url": "https://www.science.org/doi/10.1126/sciadv.aej1838"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3107|Magnetic properties of thin films",
      "subfield": "amo"
    }
  ],
  "title": "Observation of orbital-angular-momentum-driven temperature modulation via the spin Peltier effect",
  "title_text": "Observation of orbital-angular-momentum-driven temperature modulation via the spin Peltier effect",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:41Z",
  "url": "https://research.draconitic.com/paper/3b8wc14wf0ey6",
  "venue": "Science Advances",
  "versions": [
    {
      "doi": "10.48550/arxiv.2606.12992",
      "pid": "7mwfetmz7zv3e",
      "relation": "preprint",
      "title": "Observation of orbital-angular-momentum-driven temperature modulation via the spin Peltier effect",
      "venue": "arXiv"
    }
  ]
}