Orbital correlations in doped manganites
We review our recent X-ray scattering studies of charge and orbital order in doped manganites, with specific emphasis on the role of orbital correlations in Pr1-xCaxMnO3. For x=0.25, we find an orbital structure indistinguishable from the undoped structure and long-range orbital order at low tempera...
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| Veröffentlicht in: | Applied physics. A, Materials science & processing Materials science & processing, 2001-12, Vol.73 (6), p.723-730 |
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| creator | Hill, J.P. Nelson, C.S. v. Zimmermann, M. Kim, Y.-J. Gibbs, D. Casa, D. Keimer, B. Murakami, Y. Venkataraman, C. Gog, T. Tomioka, Y. Tokura, Y. Kiryukhin, V. Koo, T.Y. Cheong, S.-W. |
| description | We review our recent X-ray scattering studies of charge and orbital order in doped manganites, with specific emphasis on the role of orbital correlations in Pr1-xCaxMnO3. For x=0.25, we find an orbital structure indistinguishable from the undoped structure and long-range orbital order at low temperatures. For dopings 0.3 |
| doi_str_mv | 10.1007/s003390100968 |
| format | Article |
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Zimmermann, M. ; Kim, Y.-J. ; Gibbs, D. ; Casa, D. ; Keimer, B. ; Murakami, Y. ; Venkataraman, C. ; Gog, T. ; Tomioka, Y. ; Tokura, Y. ; Kiryukhin, V. ; Koo, T.Y. ; Cheong, S.-W.</creator><creatorcontrib>Hill, J.P. ; Nelson, C.S. ; v. Zimmermann, M. ; Kim, Y.-J. ; Gibbs, D. ; Casa, D. ; Keimer, B. ; Murakami, Y. ; Venkataraman, C. ; Gog, T. ; Tomioka, Y. ; Tokura, Y. ; Kiryukhin, V. ; Koo, T.Y. ; Cheong, S.-W. ; Inst. of Materials Structure Science High Energy Accelerator Research Organization ; Lucent Tech ; Princeton Univ ; Advanced Photon Source, Argonne National Lab., IL (US) ; Rutgers Univ ; BNL (US) ; Univ. of Tokyo ; Joint Research Center for Atom Tech ; Max-Planck Inst</creatorcontrib><description>We review our recent X-ray scattering studies of charge and orbital order in doped manganites, with specific emphasis on the role of orbital correlations in Pr1-xCaxMnO3. For x=0.25, we find an orbital structure indistinguishable from the undoped structure and long-range orbital order at low temperatures. For dopings 0.3<=x<=0.5, we find scattering consistent with a charge and orbitally ordered CE-type structure. While in each case the charge order peaks are resolution limited, the orbital order exhibits only short-range correlations. We report the doping dependence of the correlation length and discuss the connection between the orbital correlations and the finite magnetic correlation length observed on the Mn sublattice with neutron-scattering techniques. The physical origin of these domains, which appear to be isotropic, remains unclear. We find that weak orbital correlations persist well above the phase transition, with a correlation length of 1--2 lattice constants at high temperatures. Significantly, we observe similar correlations at high temperatures in La0.7Ca0.3MnO3, which does not have an orbitally ordered ground state, and we conclude that such correlations are robust to variations in the relative strength of the electron--phonon coupling.</description><identifier>ISSN: 0947-8396</identifier><identifier>EISSN: 1432-0630</identifier><identifier>DOI: 10.1007/s003390100968</identifier><language>eng</language><publisher>United States</publisher><subject>ADVANCED PHOTON SOURCE ; Charge ; Correlation ; DOPED MATERIALS ; Doping ; ELECTRONIC STRUCTURE ; Ground state ; MANGANESE OXIDES ; Manganites ; MATERIALS SCIENCE ; Orbitals ; Scattering</subject><ispartof>Applied physics. 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Zimmermann, M.</creatorcontrib><creatorcontrib>Kim, Y.-J.</creatorcontrib><creatorcontrib>Gibbs, D.</creatorcontrib><creatorcontrib>Casa, D.</creatorcontrib><creatorcontrib>Keimer, B.</creatorcontrib><creatorcontrib>Murakami, Y.</creatorcontrib><creatorcontrib>Venkataraman, C.</creatorcontrib><creatorcontrib>Gog, T.</creatorcontrib><creatorcontrib>Tomioka, Y.</creatorcontrib><creatorcontrib>Tokura, Y.</creatorcontrib><creatorcontrib>Kiryukhin, V.</creatorcontrib><creatorcontrib>Koo, T.Y.</creatorcontrib><creatorcontrib>Cheong, S.-W.</creatorcontrib><creatorcontrib>Inst. of Materials Structure Science High Energy Accelerator Research Organization</creatorcontrib><creatorcontrib>Lucent Tech</creatorcontrib><creatorcontrib>Princeton Univ</creatorcontrib><creatorcontrib>Advanced Photon Source, Argonne National Lab., IL (US)</creatorcontrib><creatorcontrib>Rutgers Univ</creatorcontrib><creatorcontrib>BNL (US)</creatorcontrib><creatorcontrib>Univ. of Tokyo</creatorcontrib><creatorcontrib>Joint Research Center for Atom Tech</creatorcontrib><creatorcontrib>Max-Planck Inst</creatorcontrib><title>Orbital correlations in doped manganites</title><title>Applied physics. A, Materials science & processing</title><description>We review our recent X-ray scattering studies of charge and orbital order in doped manganites, with specific emphasis on the role of orbital correlations in Pr1-xCaxMnO3. For x=0.25, we find an orbital structure indistinguishable from the undoped structure and long-range orbital order at low temperatures. For dopings 0.3<=x<=0.5, we find scattering consistent with a charge and orbitally ordered CE-type structure. While in each case the charge order peaks are resolution limited, the orbital order exhibits only short-range correlations. We report the doping dependence of the correlation length and discuss the connection between the orbital correlations and the finite magnetic correlation length observed on the Mn sublattice with neutron-scattering techniques. The physical origin of these domains, which appear to be isotropic, remains unclear. We find that weak orbital correlations persist well above the phase transition, with a correlation length of 1--2 lattice constants at high temperatures. Significantly, we observe similar correlations at high temperatures in La0.7Ca0.3MnO3, which does not have an orbitally ordered ground state, and we conclude that such correlations are robust to variations in the relative strength of the electron--phonon coupling.</description><subject>ADVANCED PHOTON SOURCE</subject><subject>Charge</subject><subject>Correlation</subject><subject>DOPED MATERIALS</subject><subject>Doping</subject><subject>ELECTRONIC STRUCTURE</subject><subject>Ground state</subject><subject>MANGANESE OXIDES</subject><subject>Manganites</subject><subject>MATERIALS SCIENCE</subject><subject>Orbitals</subject><subject>Scattering</subject><issn>0947-8396</issn><issn>1432-0630</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><recordid>eNpVkDFPwzAUhC0EEqUwskdi6RJ4tlPHb0QVFKRKXWC2HNsBo8QOtjvw70lVFt5yN3y60ztCbincU4D2IQNwjjB7FPKMLGjDWQ2CwzlZADZtLTmKS3KV8xfM1zC2IKt96nzRQ2ViSm7QxceQKx8qGydnq1GHDx18cfmaXPR6yO7mT5fk_fnpbfNS7_bb183jrjYMZam1tUKKDnvBENoGe0n7Fq3WpgGNaKWdPZpGg7U9gkGLXaclcACxdvMDS3J3yo25eJXN3G0-TQzBmaLoGoAJymdqdaKmFL8PLhc1-mzcMOjg4iEryiQXCIwd0fqEmhRzTq5XU_KjTj-Kgjrupv7txn8B0vFedw</recordid><startdate>20011201</startdate><enddate>20011201</enddate><creator>Hill, J.P.</creator><creator>Nelson, C.S.</creator><creator>v. 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Zimmermann, M. ; Kim, Y.-J. ; Gibbs, D. ; Casa, D. ; Keimer, B. ; Murakami, Y. ; Venkataraman, C. ; Gog, T. ; Tomioka, Y. ; Tokura, Y. ; Kiryukhin, V. ; Koo, T.Y. ; Cheong, S.-W.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c298t-add686b9f6290749f81f79daac40a99d8ddaa9c4a0ddf90c9d9bba8030065e003</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2001</creationdate><topic>ADVANCED PHOTON SOURCE</topic><topic>Charge</topic><topic>Correlation</topic><topic>DOPED MATERIALS</topic><topic>Doping</topic><topic>ELECTRONIC STRUCTURE</topic><topic>Ground state</topic><topic>MANGANESE OXIDES</topic><topic>Manganites</topic><topic>MATERIALS SCIENCE</topic><topic>Orbitals</topic><topic>Scattering</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hill, J.P.</creatorcontrib><creatorcontrib>Nelson, C.S.</creatorcontrib><creatorcontrib>v. Zimmermann, M.</creatorcontrib><creatorcontrib>Kim, Y.-J.</creatorcontrib><creatorcontrib>Gibbs, D.</creatorcontrib><creatorcontrib>Casa, D.</creatorcontrib><creatorcontrib>Keimer, B.</creatorcontrib><creatorcontrib>Murakami, Y.</creatorcontrib><creatorcontrib>Venkataraman, C.</creatorcontrib><creatorcontrib>Gog, T.</creatorcontrib><creatorcontrib>Tomioka, Y.</creatorcontrib><creatorcontrib>Tokura, Y.</creatorcontrib><creatorcontrib>Kiryukhin, V.</creatorcontrib><creatorcontrib>Koo, T.Y.</creatorcontrib><creatorcontrib>Cheong, S.-W.</creatorcontrib><creatorcontrib>Inst. of Materials Structure Science High Energy Accelerator Research Organization</creatorcontrib><creatorcontrib>Lucent Tech</creatorcontrib><creatorcontrib>Princeton Univ</creatorcontrib><creatorcontrib>Advanced Photon Source, Argonne National Lab., IL (US)</creatorcontrib><creatorcontrib>Rutgers Univ</creatorcontrib><creatorcontrib>BNL (US)</creatorcontrib><creatorcontrib>Univ. of Tokyo</creatorcontrib><creatorcontrib>Joint Research Center for Atom Tech</creatorcontrib><creatorcontrib>Max-Planck Inst</creatorcontrib><collection>CrossRef</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><collection>OSTI.GOV</collection><jtitle>Applied physics. A, Materials science & processing</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hill, J.P.</au><au>Nelson, C.S.</au><au>v. Zimmermann, M.</au><au>Kim, Y.-J.</au><au>Gibbs, D.</au><au>Casa, D.</au><au>Keimer, B.</au><au>Murakami, Y.</au><au>Venkataraman, C.</au><au>Gog, T.</au><au>Tomioka, Y.</au><au>Tokura, Y.</au><au>Kiryukhin, V.</au><au>Koo, T.Y.</au><au>Cheong, S.-W.</au><aucorp>Inst. of Materials Structure Science High Energy Accelerator Research Organization</aucorp><aucorp>Lucent Tech</aucorp><aucorp>Princeton Univ</aucorp><aucorp>Advanced Photon Source, Argonne National Lab., IL (US)</aucorp><aucorp>Rutgers Univ</aucorp><aucorp>BNL (US)</aucorp><aucorp>Univ. of Tokyo</aucorp><aucorp>Joint Research Center for Atom Tech</aucorp><aucorp>Max-Planck Inst</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Orbital correlations in doped manganites</atitle><jtitle>Applied physics. A, Materials science & processing</jtitle><date>2001-12-01</date><risdate>2001</risdate><volume>73</volume><issue>6</issue><spage>723</spage><epage>730</epage><pages>723-730</pages><issn>0947-8396</issn><eissn>1432-0630</eissn><abstract>We review our recent X-ray scattering studies of charge and orbital order in doped manganites, with specific emphasis on the role of orbital correlations in Pr1-xCaxMnO3. For x=0.25, we find an orbital structure indistinguishable from the undoped structure and long-range orbital order at low temperatures. For dopings 0.3<=x<=0.5, we find scattering consistent with a charge and orbitally ordered CE-type structure. While in each case the charge order peaks are resolution limited, the orbital order exhibits only short-range correlations. We report the doping dependence of the correlation length and discuss the connection between the orbital correlations and the finite magnetic correlation length observed on the Mn sublattice with neutron-scattering techniques. The physical origin of these domains, which appear to be isotropic, remains unclear. We find that weak orbital correlations persist well above the phase transition, with a correlation length of 1--2 lattice constants at high temperatures. Significantly, we observe similar correlations at high temperatures in La0.7Ca0.3MnO3, which does not have an orbitally ordered ground state, and we conclude that such correlations are robust to variations in the relative strength of the electron--phonon coupling.</abstract><cop>United States</cop><doi>10.1007/s003390100968</doi><tpages>8</tpages></addata></record> |
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| subjects | ADVANCED PHOTON SOURCE Charge Correlation DOPED MATERIALS Doping ELECTRONIC STRUCTURE Ground state MANGANESE OXIDES Manganites MATERIALS SCIENCE Orbitals Scattering |
| title | Orbital correlations in doped manganites |
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