{
  "abstract": "Angular-momentum transport provides a pathway for controlling energy flow in solids beyond conventional charge-based mechanisms. While spin currents are known to mediate spin-caloritronic phenomena such as the spin Peltier effect (SPE), the role of orbital angular momentum in heat transport remains largely unexplored. Here we demonstrate orbital-angular-momentum-driven temperature modulation via the SPE in yttrium iron garnet/Pt/CuOx heterostructures. Using wedge-shaped CuOx 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 orbital-angular-momentum generation and propagation at the Cu/CuOx interface. These results provide direct experimental evidence that charge-current-driven orbital angular momentum 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": [],
  "article_type": "Journal reference: Sci. Adv. 12, eaej1838 (2026)",
  "arxiv": "2606.12992",
  "author_total": 4,
  "authors": [
    {
      "name": "Sang J. Park"
    },
    {
      "name": "Tsuneyoshi Kan"
    },
    {
      "name": "Takamasa Hirai"
    },
    {
      "name": "Ken-ichi Uchida"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7mwfetmz7zv3e.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.12992",
  "fulltext_url": null,
  "id": "7mwfetmz7zv3e",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.12992",
  "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": null,
  "pdf_url": "https://arxiv.org/pdf/2606.12992",
  "pmcid": null,
  "pmid": null,
  "published": "2026-08-20",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/7mwfetmz7zv3e.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:01Z",
      "native_id": "2606.12992",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.12992"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "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": "preprint",
  "updated_at": "2026-10-30T12:27:01Z",
  "url": "https://research.draconitic.com/paper/7mwfetmz7zv3e",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1126/sciadv.aej1838",
      "pid": "3b8wc14wf0ey6",
      "relation": "published-as",
      "title": "Observation of orbital-angular-momentum-driven temperature modulation via the spin Peltier effect",
      "venue": "Science Advances"
    }
  ]
}