Strain control of a bandwidth-driven spin reorientation in Ca3Ru2O7
Abstract The layered-ruthenate family of materials possess an intricate interplay of structural, electronic and magnetic degrees of freedom that yields a plethora of delicately balanced ground states. This is exemplified by Ca3Ru2O7, which hosts a coupled transition in which the lattice parameters j...
| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-10-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-41714-8 |
| _version_ | 1827709824042795008 |
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| author | C. D. Dashwood A. H. Walker M. P. Kwasigroch L. S. I. Veiga Q. Faure J. G. Vale D. G. Porter P. Manuel D. D. Khalyavin F. Orlandi C. V. Colin O. Fabelo F. Krüger R. S. Perry R. D. Johnson A. G. Green D. F. McMorrow |
| author_facet | C. D. Dashwood A. H. Walker M. P. Kwasigroch L. S. I. Veiga Q. Faure J. G. Vale D. G. Porter P. Manuel D. D. Khalyavin F. Orlandi C. V. Colin O. Fabelo F. Krüger R. S. Perry R. D. Johnson A. G. Green D. F. McMorrow |
| author_sort | C. D. Dashwood |
| collection | DOAJ |
| description | Abstract The layered-ruthenate family of materials possess an intricate interplay of structural, electronic and magnetic degrees of freedom that yields a plethora of delicately balanced ground states. This is exemplified by Ca3Ru2O7, which hosts a coupled transition in which the lattice parameters jump, the Fermi surface partially gaps and the spins undergo a 90∘ in-plane reorientation. Here, we show how the transition is driven by a lattice strain that tunes the electronic bandwidth. We apply uniaxial stress to single crystals of Ca3Ru2O7, using neutron and resonant x-ray scattering to simultaneously probe the structural and magnetic responses. These measurements demonstrate that the transition can be driven by externally induced strain, stimulating the development of a theoretical model in which an internal strain is generated self-consistently to lower the electronic energy. We understand the strain to act by modifying tilts and rotations of the RuO6 octahedra, which directly influences the nearest-neighbour hopping. Our results offer a blueprint for uncovering the driving force behind coupled phase transitions, as well as a route to controlling them. |
| first_indexed | 2024-03-10T17:28:17Z |
| format | Article |
| id | doaj.art-4b0295a83bef4d9f8638b5e128e01d41 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-10T17:28:17Z |
| publishDate | 2023-10-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-4b0295a83bef4d9f8638b5e128e01d412023-11-20T10:06:06ZengNature PortfolioNature Communications2041-17232023-10-011411910.1038/s41467-023-41714-8Strain control of a bandwidth-driven spin reorientation in Ca3Ru2O7C. D. Dashwood0A. H. Walker1M. P. Kwasigroch2L. S. I. Veiga3Q. Faure4J. G. Vale5D. G. Porter6P. Manuel7D. D. Khalyavin8F. Orlandi9C. V. Colin10O. Fabelo11F. Krüger12R. S. Perry13R. D. Johnson14A. G. Green15D. F. McMorrow16London Centre for Nanotechnology and Department of Physics and Astronomy, University College LondonLondon Centre for Nanotechnology and Department of Physics and Astronomy, University College LondonDepartment of Mathematics, University College LondonLondon Centre for Nanotechnology and Department of Physics and Astronomy, University College LondonLondon Centre for Nanotechnology and Department of Physics and Astronomy, University College LondonLondon Centre for Nanotechnology and Department of Physics and Astronomy, University College LondonDiamond Light Source, Harwell Science and Innovation CampusISIS Neutron and Muon Source, STFC Rutherford Appleton LaboratoryISIS Neutron and Muon Source, STFC Rutherford Appleton LaboratoryISIS Neutron and Muon Source, STFC Rutherford Appleton LaboratoryUniversité Grenoble Alpes, CNRS, Institut NéelInstitut Laue-LangevinLondon Centre for Nanotechnology and Department of Physics and Astronomy, University College LondonLondon Centre for Nanotechnology and Department of Physics and Astronomy, University College LondonDepartment of Physics and Astronomy, University College LondonLondon Centre for Nanotechnology and Department of Physics and Astronomy, University College LondonLondon Centre for Nanotechnology and Department of Physics and Astronomy, University College LondonAbstract The layered-ruthenate family of materials possess an intricate interplay of structural, electronic and magnetic degrees of freedom that yields a plethora of delicately balanced ground states. This is exemplified by Ca3Ru2O7, which hosts a coupled transition in which the lattice parameters jump, the Fermi surface partially gaps and the spins undergo a 90∘ in-plane reorientation. Here, we show how the transition is driven by a lattice strain that tunes the electronic bandwidth. We apply uniaxial stress to single crystals of Ca3Ru2O7, using neutron and resonant x-ray scattering to simultaneously probe the structural and magnetic responses. These measurements demonstrate that the transition can be driven by externally induced strain, stimulating the development of a theoretical model in which an internal strain is generated self-consistently to lower the electronic energy. We understand the strain to act by modifying tilts and rotations of the RuO6 octahedra, which directly influences the nearest-neighbour hopping. Our results offer a blueprint for uncovering the driving force behind coupled phase transitions, as well as a route to controlling them.https://doi.org/10.1038/s41467-023-41714-8 |
| spellingShingle | C. D. Dashwood A. H. Walker M. P. Kwasigroch L. S. I. Veiga Q. Faure J. G. Vale D. G. Porter P. Manuel D. D. Khalyavin F. Orlandi C. V. Colin O. Fabelo F. Krüger R. S. Perry R. D. Johnson A. G. Green D. F. McMorrow Strain control of a bandwidth-driven spin reorientation in Ca3Ru2O7 Nature Communications |
| title | Strain control of a bandwidth-driven spin reorientation in Ca3Ru2O7 |
| title_full | Strain control of a bandwidth-driven spin reorientation in Ca3Ru2O7 |
| title_fullStr | Strain control of a bandwidth-driven spin reorientation in Ca3Ru2O7 |
| title_full_unstemmed | Strain control of a bandwidth-driven spin reorientation in Ca3Ru2O7 |
| title_short | Strain control of a bandwidth-driven spin reorientation in Ca3Ru2O7 |
| title_sort | strain control of a bandwidth driven spin reorientation in ca3ru2o7 |
| url | https://doi.org/10.1038/s41467-023-41714-8 |
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