Oscillatory Nernst effect in Pt|ferrite|cuprate-superconductor trilayer films
Abstract Although magnetism and superconductivity hardly coexist in a single material, recent advances in nanotechnology and spintronics have brought to light their interplay in magnetotransport in thin-film heterostructures. Here, we found a periodic oscillation of Nernst voltage with respect to ma...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2017-07-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-017-05747-6 |
| _version_ | 1818842480883269632 |
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| author | Y. Shiomi J. Lustikova E. Saitoh |
| author_facet | Y. Shiomi J. Lustikova E. Saitoh |
| author_sort | Y. Shiomi |
| collection | DOAJ |
| description | Abstract Although magnetism and superconductivity hardly coexist in a single material, recent advances in nanotechnology and spintronics have brought to light their interplay in magnetotransport in thin-film heterostructures. Here, we found a periodic oscillation of Nernst voltage with respect to magnetic fields in Pt|LiFe5O8 (Pt|LFO) bilayers grown on a cuprate superconductor YBa2Cu3O7−x (YBCO). At high temperatures above the superconducting transition temperature (T C ) of YBCO, spin Seebeck voltages originating in Pt|LFO layers are observed. As temperature decreases well below T C , the spin Seebeck voltage is suppressed and unconventional periodic voltage oscillation as a function of magnetic fields appears; such an oscillation emerging along the Hall direction in the superconducting state has not been observed yet. Dynamics of superconducting vortices pinned by surface precipitates seems responsible for the oscillatory Nernst effect. |
| first_indexed | 2024-12-19T04:42:39Z |
| format | Article |
| id | doaj.art-6c17d20e70914ada9ec4aaaa092205ba |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-19T04:42:39Z |
| publishDate | 2017-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-6c17d20e70914ada9ec4aaaa092205ba2022-12-21T20:35:34ZengNature PortfolioScientific Reports2045-23222017-07-01711810.1038/s41598-017-05747-6Oscillatory Nernst effect in Pt|ferrite|cuprate-superconductor trilayer filmsY. Shiomi0J. Lustikova1E. Saitoh2Institute for Materials Research, Tohoku UniversityInstitute for Materials Research, Tohoku UniversityInstitute for Materials Research, Tohoku UniversityAbstract Although magnetism and superconductivity hardly coexist in a single material, recent advances in nanotechnology and spintronics have brought to light their interplay in magnetotransport in thin-film heterostructures. Here, we found a periodic oscillation of Nernst voltage with respect to magnetic fields in Pt|LiFe5O8 (Pt|LFO) bilayers grown on a cuprate superconductor YBa2Cu3O7−x (YBCO). At high temperatures above the superconducting transition temperature (T C ) of YBCO, spin Seebeck voltages originating in Pt|LFO layers are observed. As temperature decreases well below T C , the spin Seebeck voltage is suppressed and unconventional periodic voltage oscillation as a function of magnetic fields appears; such an oscillation emerging along the Hall direction in the superconducting state has not been observed yet. Dynamics of superconducting vortices pinned by surface precipitates seems responsible for the oscillatory Nernst effect.https://doi.org/10.1038/s41598-017-05747-6 |
| spellingShingle | Y. Shiomi J. Lustikova E. Saitoh Oscillatory Nernst effect in Pt|ferrite|cuprate-superconductor trilayer films Scientific Reports |
| title | Oscillatory Nernst effect in Pt|ferrite|cuprate-superconductor trilayer films |
| title_full | Oscillatory Nernst effect in Pt|ferrite|cuprate-superconductor trilayer films |
| title_fullStr | Oscillatory Nernst effect in Pt|ferrite|cuprate-superconductor trilayer films |
| title_full_unstemmed | Oscillatory Nernst effect in Pt|ferrite|cuprate-superconductor trilayer films |
| title_short | Oscillatory Nernst effect in Pt|ferrite|cuprate-superconductor trilayer films |
| title_sort | oscillatory nernst effect in pt ferrite cuprate superconductor trilayer films |
| url | https://doi.org/10.1038/s41598-017-05747-6 |
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