{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T12:05:01Z","timestamp":1792670701044,"version":"4.5.0"},"reference-count":56,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,5,28]],"date-time":"2026-05-28T00:00:00Z","timestamp":1779926400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"},{"start":{"date-parts":[[2026,5,28]],"date-time":"2026-05-28T00:00:00Z","timestamp":1779926400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["advanced.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Advanced Materials"],"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Orbital current\u2010induced torque (OT) has emerged as a promising alternative to spin\u2013orbit torque owing to the typically larger orbital Hall conductivity. A substantial OT can be generated at metal\/oxide interfaces via the orbital Rashba\u2013Edelstein effect (OREE), which has been predominantly reported in surface\u2010oxidized Cu structures. However, the lack of well\u2010defined crystalline and interfacial structures in oxidized Cu has hindered a clear understanding of the underlying mechanism and limited further enhancement of OT. Here, we demonstrate a significantly enhanced OREE in crystalline CuO\n                    <jats:sub>x<\/jats:sub>\n                    \/Cu heterostructures with well\u2010defined interfaces. By employing controlled oxidation of single\u2010crystalline Cu, we fabricate crystalline CuO\n                    <jats:sub>x<\/jats:sub>\n                    layers with distinct chemical phases and quantify the resulting OT using harmonic Hall measurements. We find that the crystalline Cu\n                    <jats:sub>2<\/jats:sub>\n                    O\/Cu heterostructure exhibits a damping\u2010like OT efficiency approximately seven times larger than that of naturally oxidized Cu, highlighting the crucial role of structural ordering and interface sharpness. Notably, this large OT efficiency, combined with the high electrical conductivity of Cu, yields a spin torque conductivity of 1.9\u00a0\u00d7\u00a010\n                    <jats:sup>6<\/jats:sup>\n                    \u00a0(\u210f\/2e)\u03a9\n                    <jats:sup>\u22121<\/jats:sup>\n                    \u00a0m\n                    <jats:sup>\u22121<\/jats:sup>\n                    , exceeding that of Pt. These results establish crystalline Cu\n                    <jats:sub>2<\/jats:sub>\n                    O\/Cu heterostructures as a promising platform for ultralow\u2010power spin\u2010orbitronic devices.\n                  <\/jats:p>","DOI":"10.1002\/adma.73522","type":"journal-article","created":{"date-parts":[[2026,5,28]],"date-time":"2026-05-28T10:08:16Z","timestamp":1779962896000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Giant Orbital Rashba\u2013Edelstein Effect in Crystalline Cu\n                    <sub>2<\/sub>\n                    O\/Cu Heterostructures"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8963-1893","authenticated-orcid":false,"given":"San","family":"Ko","sequence":"first","affiliation":[{"name":"Department of Physics KAIST  Daejeon Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0347-5100","authenticated-orcid":false,"given":"Jaimin","family":"Kang","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering KAIST  Daejeon Republic of Korea"},{"name":"Department of Electrical and Computer Engineering Northwestern University  Evanston Illinois USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Su Jae","family":"Kim","sequence":"additional","affiliation":[{"name":"Crystal Bank Research Institute Pusan National University  Busan Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1628-4522","authenticated-orcid":false,"given":"Hanhwi","family":"Jang","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering KAIST  Daejeon Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Do\u2010Kyeong","family":"Nam","sequence":"additional","affiliation":[{"name":"Department of Physics KAIST  Daejeon Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Minseok","family":"Kang","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering KAIST  Daejeon Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sunghoon","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering KAIST  Daejeon Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yeon Sik","family":"Jung","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering KAIST  Daejeon Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Se\u2010Young","family":"Jeong","sequence":"additional","affiliation":[{"name":"Department of Physics KAIST  Daejeon Republic of Korea"},{"name":"Department of Optics and Mechatronics Engineering Engineering Research Center For Color\u2010Modulated Extra\u2010Sensory Perception Technology Pusan National University  Busan Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8378-3746","authenticated-orcid":false,"given":"Kab\u2010Jin","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Physics KAIST  Daejeon Republic of Korea"},{"name":"Graduate School of Quantum Science and Technology KAIST  Daejeon Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8813-7025","authenticated-orcid":false,"given":"Byong\u2010Guk","family":"Park","sequence":"additional","affiliation":[{"name":"Department of Materials Science and Engineering KAIST  Daejeon Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,5,28]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1103\/RevModPhys.91.035004"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1038\/nmat2613"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1038\/nature10309"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.201907148"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.1218197"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.106.036601"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1063\/1.4753947"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.202002799"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1038\/nphys3933"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41563\u2010023\u201001774\u2010z"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41563\u2010018\u20100137\u2010y"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41563\u2010018\u20100136\u2010z"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41563\u2010021\u201000946\u2010z"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.113.196602"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010021\u201026453\u2010y"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41928\u2010022\u201000744\u20108"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.123.207205"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.116.126601"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.94.060412"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevApplied.10.031001"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.77.165117"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevMaterials.6.095001"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevResearch.2.013177"},{"key":"e_1_2_8_25_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.121.086602"},{"key":"e_1_2_8_26_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010021\u201026650\u20109"},{"key":"e_1_2_8_27_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41586\u2010023\u201006101\u20109"},{"key":"e_1_2_8_28_1","doi-asserted-by":"publisher","DOI":"10.1038\/s42005\u2010021\u201000737\u20107"},{"key":"e_1_2_8_29_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010024\u201055437\u2010x"},{"key":"e_1_2_8_30_1","doi-asserted-by":"publisher","DOI":"10.1002\/adfm.202425932"},{"key":"e_1_2_8_31_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.107.134423"},{"key":"e_1_2_8_32_1","doi-asserted-by":"publisher","DOI":"10.1038\/s42005\u2010023\u201001139\u20107"},{"key":"e_1_2_8_33_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41565\u2010023\u201001470\u20108"},{"key":"e_1_2_8_34_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.103.L121113"},{"key":"e_1_2_8_35_1","doi-asserted-by":"publisher","DOI":"10.1038\/ncomms13069"},{"key":"e_1_2_8_36_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.128.067201"},{"key":"e_1_2_8_37_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467\u2010025\u201061602\u20107"},{"key":"e_1_2_8_38_1","doi-asserted-by":"publisher","DOI":"10.1126\/sciadv.aax4278"},{"key":"e_1_2_8_39_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsami.5c15854"},{"key":"e_1_2_8_40_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevMaterials.7.L111401"},{"key":"e_1_2_8_41_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.122.217701"},{"key":"e_1_2_8_42_1","doi-asserted-by":"publisher","DOI":"10.1103\/qgdy\u2010k39l"},{"key":"e_1_2_8_43_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41586\u2010021\u201004375\u20105"},{"key":"e_1_2_8_44_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.202007345"},{"key":"e_1_2_8_45_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.89.144425"},{"key":"e_1_2_8_46_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevB.90.224427"},{"key":"e_1_2_8_47_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.nanolett.4c05170"},{"key":"e_1_2_8_48_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevResearch.4.L032041"},{"key":"e_1_2_8_49_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevResearch.7.L012042"},{"key":"e_1_2_8_50_1","doi-asserted-by":"publisher","DOI":"10.1063\/5.0198970"},{"key":"e_1_2_8_51_1","doi-asserted-by":"publisher","DOI":"10.1143\/APEX.5.073002"},{"key":"e_1_2_8_52_1","doi-asserted-by":"publisher","DOI":"10.1063\/1.4848102"},{"key":"e_1_2_8_53_1","doi-asserted-by":"publisher","DOI":"10.1063\/1.4898593"},{"key":"e_1_2_8_54_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.132.236702"},{"key":"e_1_2_8_55_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevApplied.23.054038"},{"key":"e_1_2_8_56_1","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevLett.109.096602"},{"key":"e_1_2_8_57_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41565\u2010019\u20100525\u20108"}],"container-title":["Advanced Materials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/advanced.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/adma.73522","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/advanced.onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/adma.73522","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/advanced.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/adma.73522","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,28]],"date-time":"2026-05-28T10:08:18Z","timestamp":1779962898000},"score":1,"resource":{"primary":{"URL":"https:\/\/advanced.onlinelibrary.wiley.com\/doi\/10.1002\/adma.73522"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,5,28]]},"references-count":56,"alternative-id":["10.1002\/adma.73522"],"URL":"https:\/\/doi.org\/10.1002\/adma.73522","archive":["Portico"],"relation":{},"ISSN":["0935-9648","1521-4095"],"issn-type":[{"value":"0935-9648","type":"print"},{"value":"1521-4095","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,5,28]]},"assertion":[{"value":"2026-01-29","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-05-21","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-05-28","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e73522"}}