Pronounced interplay between intrinsic phase-coexistence and octahedral tilt magnitude in hole-doped lanthanum cuprates
Abstract Definitive understanding of superconductivity and its interplay with structural symmetry in the hole-doped lanthanum cuprates remains elusive. The suppression of superconductivity around 1/8th doping maintains particular focus, often attributed to charge-density waves (CDWs) ordering in the...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
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Nature Portfolio
2022-08-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-18574-1 |
| _version_ | 1818082491803631616 |
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| author | Jeremiah P. Tidey En-Pei Liu Yen-Chung Lai Yu-Chun Chuang Wei-Tin Chen Lauren J. Cane Chris Lester Alexander N. D. Petsch Anna Herlihy Arkadiy Simonov Stephen M. Hayden Mark Senn |
| author_facet | Jeremiah P. Tidey En-Pei Liu Yen-Chung Lai Yu-Chun Chuang Wei-Tin Chen Lauren J. Cane Chris Lester Alexander N. D. Petsch Anna Herlihy Arkadiy Simonov Stephen M. Hayden Mark Senn |
| author_sort | Jeremiah P. Tidey |
| collection | DOAJ |
| description | Abstract Definitive understanding of superconductivity and its interplay with structural symmetry in the hole-doped lanthanum cuprates remains elusive. The suppression of superconductivity around 1/8th doping maintains particular focus, often attributed to charge-density waves (CDWs) ordering in the low-temperature tetragonal (LTT) phase. Central to many investigations into this interplay is the thesis that La1.875Ba0.125CuO4 and particularly La1.675Eu0.2Sr0.125CuO4 present model systems of purely LTT structure at low temperature. However, combining single-crystal and high-resolution powder X-ray diffraction, we find these to exhibit significant, intrinsic coexistence of LTT and low-temperature orthorhombic domains, typically associated with superconductivity, even at 10 K. Our two-phase models reveal substantially greater tilting of CuO6 octahedra in the LTT phase, markedly buckling the CuO2 planes. This would couple significantly to band narrowing, potentially indicating a picture of electronically driven phase segregation, reminiscent of optimally doped manganites. These results call for reassessment of many experiments seeking to elucidate structural and electronic interplay at 1/8 doping. |
| first_indexed | 2024-12-10T19:22:57Z |
| format | Article |
| id | doaj.art-25598954ffdc476aa1ac5ee97942ee49 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-10T19:22:57Z |
| publishDate | 2022-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-25598954ffdc476aa1ac5ee97942ee492022-12-22T01:36:26ZengNature PortfolioScientific Reports2045-23222022-08-0112111310.1038/s41598-022-18574-1Pronounced interplay between intrinsic phase-coexistence and octahedral tilt magnitude in hole-doped lanthanum cupratesJeremiah P. Tidey0En-Pei Liu1Yen-Chung Lai2Yu-Chun Chuang3Wei-Tin Chen4Lauren J. Cane5Chris Lester6Alexander N. D. Petsch7Anna Herlihy8Arkadiy Simonov9Stephen M. Hayden10Mark Senn11Department of Chemistry, University of WarwickDepartment of Physics, Tamkang UniversityNational Synchrotron Radiation Research CenterNational Synchrotron Radiation Research CenterCenter for Condensed Matter Sciences and Center of Atomic Initiative for New Materials, National Taiwan UniversityH.H. Wills Physics Laboratory, University of BristolH.H. Wills Physics Laboratory, University of BristolH.H. Wills Physics Laboratory, University of BristolDepartment of Chemistry, University of WarwickDepartment of Materials (Multifunctional Ferroic Materials), ETH ZürichH.H. Wills Physics Laboratory, University of BristolDepartment of Chemistry, University of WarwickAbstract Definitive understanding of superconductivity and its interplay with structural symmetry in the hole-doped lanthanum cuprates remains elusive. The suppression of superconductivity around 1/8th doping maintains particular focus, often attributed to charge-density waves (CDWs) ordering in the low-temperature tetragonal (LTT) phase. Central to many investigations into this interplay is the thesis that La1.875Ba0.125CuO4 and particularly La1.675Eu0.2Sr0.125CuO4 present model systems of purely LTT structure at low temperature. However, combining single-crystal and high-resolution powder X-ray diffraction, we find these to exhibit significant, intrinsic coexistence of LTT and low-temperature orthorhombic domains, typically associated with superconductivity, even at 10 K. Our two-phase models reveal substantially greater tilting of CuO6 octahedra in the LTT phase, markedly buckling the CuO2 planes. This would couple significantly to band narrowing, potentially indicating a picture of electronically driven phase segregation, reminiscent of optimally doped manganites. These results call for reassessment of many experiments seeking to elucidate structural and electronic interplay at 1/8 doping.https://doi.org/10.1038/s41598-022-18574-1 |
| spellingShingle | Jeremiah P. Tidey En-Pei Liu Yen-Chung Lai Yu-Chun Chuang Wei-Tin Chen Lauren J. Cane Chris Lester Alexander N. D. Petsch Anna Herlihy Arkadiy Simonov Stephen M. Hayden Mark Senn Pronounced interplay between intrinsic phase-coexistence and octahedral tilt magnitude in hole-doped lanthanum cuprates Scientific Reports |
| title | Pronounced interplay between intrinsic phase-coexistence and octahedral tilt magnitude in hole-doped lanthanum cuprates |
| title_full | Pronounced interplay between intrinsic phase-coexistence and octahedral tilt magnitude in hole-doped lanthanum cuprates |
| title_fullStr | Pronounced interplay between intrinsic phase-coexistence and octahedral tilt magnitude in hole-doped lanthanum cuprates |
| title_full_unstemmed | Pronounced interplay between intrinsic phase-coexistence and octahedral tilt magnitude in hole-doped lanthanum cuprates |
| title_short | Pronounced interplay between intrinsic phase-coexistence and octahedral tilt magnitude in hole-doped lanthanum cuprates |
| title_sort | pronounced interplay between intrinsic phase coexistence and octahedral tilt magnitude in hole doped lanthanum cuprates |
| url | https://doi.org/10.1038/s41598-022-18574-1 |
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