{"id":10033,"date":"2024-12-05T09:42:00","date_gmt":"2024-12-05T00:42:00","guid":{"rendered":"https:\/\/physics.gist.ac.kr\/?post_type=research_news&#038;p=10033"},"modified":"2024-12-05T09:43:18","modified_gmt":"2024-12-05T00:43:18","slug":"%ec%b5%9c%ec%9d%b8%ed%98%81-%eb%b0%95%ec%82%ac-%ec%9d%b4%ec%a2%85%ec%84%9d-%ea%b5%90%ec%88%98-%ea%b0%95%ec%9c%a0%ec%a0%84%ec%b2%b4-hzo-%eb%b0%95%eb%a7%89%ec%9d%98-%eb%8c%80%eb%a9%b4%ec%a0%81-2-3-2","status":"publish","type":"research_news","link":"https:\/\/physics.gist.ac.kr\/en\/news-events\/research_highlights_news\/%ec%b5%9c%ec%9d%b8%ed%98%81-%eb%b0%95%ec%82%ac-%ec%9d%b4%ec%a2%85%ec%84%9d-%ea%b5%90%ec%88%98-%ea%b0%95%ec%9c%a0%ec%a0%84%ec%b2%b4-hzo-%eb%b0%95%eb%a7%89%ec%9d%98-%eb%8c%80%eb%a9%b4%ec%a0%81-2-3-2\/","title":{"rendered":"[\ucd5c\uc778\ud601 \ubc15\uc0ac, \uc774\uc885\uc11d \uad50\uc218] \uacb0\ub9de\uc740 \ud3ec\ub17c \uc218\uc1a1 \ud2b9\uc131 \uc81c\uc5b4 \uc131\uacf5 (Advanced Science)"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"991\" height=\"750\" src=\"https:\/\/physics.gist.ac.kr\/wp-content\/uploads\/2024\/12\/2.jpg\" alt=\"\" class=\"wp-image-10034\" title=\"\"><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\ud398\ub85c\ube0c\uc2a4\uce74\uc774\ud2b8 \uc0b0\ud654\ubb3c\ub85c \uad6c\uc131\ub41c \uc778\uacf5 \ucd08\uaca9\uc790\ub294 \uaca9\uc790 \uc8fc\uae30\uc131\uc744 \uc7ac\uc815\uc758\ud558\uc5ec \ud3ec\ub17c \uc218\uc1a1\uc744 \uc81c\uc5b4\ud558\uae30 \uc704\ud55c \ud544\uc218 \ud50c\ub7ab\ud3fc \uc5ed\ud560\uc744 \ud558\uba70, \uc774\ub294 \uc804\ud558 \ubc0f \uc2a4\ud540 \uc790\uc720\ub3c4\uc640 \uad00\ub828\ud55c \uc0c1\uc804\uc774\uc5d0 \ud070 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4. \uc774\uc804\uc758 \ud3ec\ub17c \uc870\uc791 \ubc29\ubc95\uc740 \uc804\uc774 \uae08\uc18d \uc0b0\ud654\ubb3c\uc5d0\uc11c \ub450\ub4dc\ub7ec\uc9c0\ub294 \ubcf5\uc7a1\ud55c \uc0c1\ud638 \uc0c1\ud638 \uc791\uc6a9\uc744 \ud65c\uc6a9\ud558\uae30\ubcf4\ub2e4\ub294 \ucd08\uaca9\uc790\uc758 \uc8fc\uae30\uc131\uc744 \uc81c\uc5b4\ud558\ub294 \u200b\u200b\uac83\uc73c\ub85c \uc81c\ud55c\ub418\uc5c8\uc2b5\ub2c8\ub2e4. \uac15\uc790\uc131 \uae08\uc18d SrRuO3\uc640 \uc591\uc790 \uc0c1\uc804\uae30\uc0c1 SrTiO3\ub85c \uad6c\uc131\ub41c \uc0b0\ud654\ubb3c \ucd08\uaca9\uc790\uc5d0 \ub300\ud55c \ubcf8 \uc5f0\uad6c\uc5d0\uc11c\ub294 \uc6d0\uc790 \uc218\uc900\uc758 \uc815\ubc00\ub3c4\ub85c \ucd08\uaca9\uc790\uc758 \uae30\ud558\ud559\uc801 \uad6c\uc870\ub97c \uc81c\uc5b4\ud558\uace0, \uad6c\uc870\uc801 \ubc0f \uc790\uae30\uc801 \uc0c1\uc804\uc774\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud3ec\ub17c \uc0c1\ud0dc\uc758 \uacb0\ub9de\uc74c\uc131\uc744 \uc81c\uc5b4\ud558\ub294\ub370 \uc131\uacf5\ud558\uc600\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ubc1c\uacac\uc740 \ubcf5\ud569 \uc0b0\ud654\ubb3c \uc774\uc885 \uad6c\uc870\uc758 \uc124\uacc4\ub97c \ud1b5\ud574 \ud3ec\ub17c\uc758 \uacb0\ub9de\uc74c\uc131\uc744 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1\ud568\uc73c\ub85c\uc368 \ubbf8\ub798\uc758 \uc5f4\uc804 \ub098\ub178 \uc7a5\uce58 \uac1c\ubc1c\uc5d0 \ub300\ud55c \uc911\uc694\ud55c \uac00\ub2a5\uc131\uc744 \uc81c\uc2dc\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. <strong>\uc774 \uacb0\uacfc\ub294 \uc751\uc6a9 \ubb3c\ub9ac \ubd84\uc57c\uc758 \uad8c\uc704\uc9c0\uc778 Advanced Science\uc9c0\uc5d0 (IF 14.3) 2024\ub144 11\uc6d4\uc5d0 \ucd9c\ud310\ub418\uc5c8\ub2e4.<\/strong><\/p>\n\n\n\n<p>Arti\ufb01cial superlattices composed of perovskite oxides serves as an essential platform for engineering coherent phonon transport by rede\ufb01ning the lattice periodicity, which strongly in\ufb02uences the lattice-coupled phase transitions in charge and spin degrees of freedom. However, previous methods of manipulating phonons have been limited to controlling the periodicity of superlattice, rather than utilizing complex mutual interactions that are prominent in transition metal oxides. In this study on oxide superlattices composed of ferromagnetic metallic SrRuO3 and quantum paraelectric SrTiO3 , phonon modulation by controlling the geometry of superlattice in atomic-scale precision is realized, demonstrating the coherent phonon engineering using structural and magnetic phase transitions. By modulating the interface density, coherent-incoherent crossover of the phonon transport at room temperature is observed, which is coupled with a change in interfacial structural continuity. Upon cooling, the close relation between phonon transport and multiple phase transitions is identi\ufb01ed. In particular, the enhancement of the polar state in SrTiO3 layer at \u2248200 K leads to the weakening of phonon coherence and a further reduction of thermal conductivity in superlattices compared to the bulk limit. These \ufb01ndings provide a guide to developing future thermoelectric nanodevices by engineering the coherence of phonons via the design of complex oxide heterostructures.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>Authors<\/strong>: In Hyeok Choi, Seung Gyo Jeong, Do-Gyeom Jeong, Ambrose Seo, Woo Seok Choi, Jong Seok Lee<\/p>\n\n\n\n<p><strong>Publication Date: <strong><strong>November 2024<\/strong><\/strong><\/strong><\/p>\n\n\n\n<p>Journal link: <a href=\"https:\/\/doi.org\/10.1002\/advs.202407382\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1002\/advs.202407382<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"featured_media":10034,"template":"","news":[27],"class_list":["post-10033","research_news","type-research_news","status-publish","has-post-thumbnail","hentry","news-research"],"acf":[],"_links":{"self":[{"href":"https:\/\/physics.gist.ac.kr\/en\/wp-json\/wp\/v2\/research_news\/10033","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/physics.gist.ac.kr\/en\/wp-json\/wp\/v2\/research_news"}],"about":[{"href":"https:\/\/physics.gist.ac.kr\/en\/wp-json\/wp\/v2\/types\/research_news"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/physics.gist.ac.kr\/en\/wp-json\/wp\/v2\/media\/10034"}],"wp:attachment":[{"href":"https:\/\/physics.gist.ac.kr\/en\/wp-json\/wp\/v2\/media?parent=10033"}],"wp:term":[{"taxonomy":"news","embeddable":true,"href":"https:\/\/physics.gist.ac.kr\/en\/wp-json\/wp\/v2\/news?post=10033"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}