{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T18:53:37Z","timestamp":1790967217564,"version":"4.1.0"},"reference-count":52,"publisher":"American Association for the Advancement of Science (AAAS)","issue":"40","funder":[{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["22H04965"],"award-info":[{"award-number":["22H04965"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002241","name":"Japan Science and Technology Agency","doi-asserted-by":"publisher","award":["JPMJER2201"],"award-info":[{"award-number":["JPMJER2201"]}],"id":[{"id":"10.13039\/501100002241","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["www.science.org"],"crossmark-restriction":true},"short-container-title":["Sci. Adv."],"published-print":{"date-parts":[[2026,10,2]]},"abstract":"<jats:p>\n                    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\n                    <jats:italic toggle=\"yes\">\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    heterostructures. Using wedge-shaped CuO\n                    <jats:italic toggle=\"yes\">\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    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\n                    <jats:italic toggle=\"yes\">\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    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.\n                  <\/jats:p>","DOI":"10.1126\/sciadv.aej1838","type":"journal-article","created":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T17:59:16Z","timestamp":1790963956000},"update-policy":"https:\/\/doi.org\/10.34133\/aaas_crossmark","source":"Crossref","is-referenced-by-count":0,"title":["Observation of orbital-angular-momentum-driven temperature modulation via the spin Peltier effect"],"prefix":"10.1126","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1684-4876","authenticated-orcid":true,"given":"Sang J.","family":"Park","sequence":"first","affiliation":[{"name":"National Institute for Materials Science, Tsukuba 305-0047, Japan."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tsuneyoshi","family":"Kan","sequence":"additional","affiliation":[{"name":"Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5577-8018","authenticated-orcid":true,"given":"Takamasa","family":"Hirai","sequence":"additional","affiliation":[{"name":"National Institute for Materials Science, Tsukuba 305-0047, Japan."},{"name":"Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Japan."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7680-3051","authenticated-orcid":true,"given":"Ken-ichi","family":"Uchida","sequence":"additional","affiliation":[{"name":"National Institute for Materials Science, Tsukuba 305-0047, Japan."},{"name":"Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, 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