Effect of charge ordering on crossplane thermal conductivity in correlated perovskite oxide superlattices
Lattice thermal conductivity is a sensitive probe of distortions of the translational invariance of crystalline materials. Crossplane thermal conductivity, κ(T), was studied by the 3ω technique in superlattices, comprising orthorhombic charge/orbital ordered manganite Pr0.7Ca0.3MnO3 and cubic SrTiO3...
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| Veröffentlicht in: | Physical review. B 2018-11, Vol.98 (19), Article 195114 |
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| container_title | Physical review. B |
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| creator | Thiessen, P. Roddatis, V. Rieger, F. Belenchuk, A. Keunecke, M. Moshnyaga, V. Jooss, Ch |
| description | Lattice thermal conductivity is a sensitive probe of distortions of the translational invariance of crystalline materials. Crossplane thermal conductivity, κ(T), was studied by the 3ω technique in superlattices, comprising orthorhombic charge/orbital ordered manganite Pr0.7Ca0.3MnO3 and cubic SrTiO3. The manganite/titanite superlattices show a peak in κ(T) just above the charge order transition temperature TCO∼240K with a pronounced thermal hysteresis. This ordering peak in κ(T) is successively suppressed with decreasing layer thickness. Our results demonstrate a minor effect of the interface density on κ, primarily visible below TCO. In contrast, much higher changes in κ(T) evolve close to TCO, due to interface-induced effects on charge and orbital ordering. Our results suggest that the ordering peak in κ(T) is a result of lattice softening above the phase transition which is modified by thickness-dependent misfit strain. |
| doi_str_mv | 10.1103/PhysRevB.98.195114 |
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Crossplane thermal conductivity, κ(T), was studied by the 3ω technique in superlattices, comprising orthorhombic charge/orbital ordered manganite Pr0.7Ca0.3MnO3 and cubic SrTiO3. The manganite/titanite superlattices show a peak in κ(T) just above the charge order transition temperature TCO∼240K with a pronounced thermal hysteresis. This ordering peak in κ(T) is successively suppressed with decreasing layer thickness. Our results demonstrate a minor effect of the interface density on κ, primarily visible below TCO. In contrast, much higher changes in κ(T) evolve close to TCO, due to interface-induced effects on charge and orbital ordering. Our results suggest that the ordering peak in κ(T) is a result of lattice softening above the phase transition which is modified by thickness-dependent misfit strain.</description><identifier>ISSN: 2469-9950</identifier><identifier>EISSN: 2469-9969</identifier><identifier>DOI: 10.1103/PhysRevB.98.195114</identifier><language>eng</language><publisher>College Park: American Physical Society</publisher><subject>Heat conductivity ; Heat transfer ; Manganites ; Perovskites ; Phase transitions ; Strontium titanates ; Superlattices ; Thermal conductivity ; Thickness ; Transition temperature</subject><ispartof>Physical review. 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Our results suggest that the ordering peak in κ(T) is a result of lattice softening above the phase transition which is modified by thickness-dependent misfit strain.</description><subject>Heat conductivity</subject><subject>Heat transfer</subject><subject>Manganites</subject><subject>Perovskites</subject><subject>Phase transitions</subject><subject>Strontium titanates</subject><subject>Superlattices</subject><subject>Thermal conductivity</subject><subject>Thickness</subject><subject>Transition temperature</subject><issn>2469-9950</issn><issn>2469-9969</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNo9kE9PAyEQxYnRxKb2C3gi8bwV2F0KR23qn6SJxuh5Q2FoqdtlBbax31606mkmMy9v5v0QuqRkSikpr583h_gC-9upFFMqa0qrEzRiFZeFlFye_vc1OUeTGLeEEMqJnBE5Qm5hLeiEvcV6o8IasA8GguvW2HdYBx9j36oOcNpA2KkWa9-ZQSe3d-mAXZb4EKBVCQzuIfh9fHcpm3w6AzgOeZR3yWmIF-jMqjbC5LeO0dvd4nX-UCyf7h_nN8tCs1mdCkG4Mvk3oHVphRFEM2O0FQoqsOUKTM6x4rXloEpRMaYZ10StZkbYykBlyzG6Ovr2wX8MEFOz9UPo8smG0QxHCsp5VrGj6idiANv0we1UODSUNN9Umz-qjRTNkWr5BQjLb_M</recordid><startdate>20181113</startdate><enddate>20181113</enddate><creator>Thiessen, P.</creator><creator>Roddatis, V.</creator><creator>Rieger, F.</creator><creator>Belenchuk, A.</creator><creator>Keunecke, M.</creator><creator>Moshnyaga, V.</creator><creator>Jooss, Ch</creator><general>American Physical Society</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>H8D</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20181113</creationdate><title>Effect of charge ordering on crossplane thermal conductivity in correlated perovskite oxide superlattices</title><author>Thiessen, P. ; Roddatis, V. ; Rieger, F. ; Belenchuk, A. ; Keunecke, M. ; Moshnyaga, V. ; Jooss, Ch</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c275t-806ad970e153f8d80c2ddcf8ae4ef3bed995b65f6ea38422c26c0ab7d8f4de4f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Heat conductivity</topic><topic>Heat transfer</topic><topic>Manganites</topic><topic>Perovskites</topic><topic>Phase transitions</topic><topic>Strontium titanates</topic><topic>Superlattices</topic><topic>Thermal conductivity</topic><topic>Thickness</topic><topic>Transition temperature</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Thiessen, P.</creatorcontrib><creatorcontrib>Roddatis, V.</creatorcontrib><creatorcontrib>Rieger, F.</creatorcontrib><creatorcontrib>Belenchuk, A.</creatorcontrib><creatorcontrib>Keunecke, M.</creatorcontrib><creatorcontrib>Moshnyaga, V.</creatorcontrib><creatorcontrib>Jooss, Ch</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physical review. 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The manganite/titanite superlattices show a peak in κ(T) just above the charge order transition temperature TCO∼240K with a pronounced thermal hysteresis. This ordering peak in κ(T) is successively suppressed with decreasing layer thickness. Our results demonstrate a minor effect of the interface density on κ, primarily visible below TCO. In contrast, much higher changes in κ(T) evolve close to TCO, due to interface-induced effects on charge and orbital ordering. Our results suggest that the ordering peak in κ(T) is a result of lattice softening above the phase transition which is modified by thickness-dependent misfit strain.</abstract><cop>College Park</cop><pub>American Physical Society</pub><doi>10.1103/PhysRevB.98.195114</doi></addata></record> |
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| subjects | Heat conductivity Heat transfer Manganites Perovskites Phase transitions Strontium titanates Superlattices Thermal conductivity Thickness Transition temperature |
| title | Effect of charge ordering on crossplane thermal conductivity in correlated perovskite oxide superlattices |
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