Possible pairing states in the superconducting bilayer nickelate
We examine various possibilities for the pairing mechanisms in the recently discovered bilayer-nickelate superconductor within the Bardeen–Cooper–Schrieffer framework. Unlike earlier studies, where only a pure d -wave or sign-changing s -wave superconductivity instability was investigated, our study...
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| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/add6cc |
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| author | Dheeraj Kumar Singh Garima Goyal Yunkyu Bang |
| author_facet | Dheeraj Kumar Singh Garima Goyal Yunkyu Bang |
| author_sort | Dheeraj Kumar Singh |
| collection | DOAJ |
| description | We examine various possibilities for the pairing mechanisms in the recently discovered bilayer-nickelate superconductor within the Bardeen–Cooper–Schrieffer framework. Unlike earlier studies, where only a pure d -wave or sign-changing s -wave superconductivity instability was investigated, our study explores the possibilities of mixed-state superconducting (SC) instability, such as the one involving both d - and sign-changing s -waves. While assuming that the superconductivity arises because of the magnetic correlations, we examine the nature of the SC gap function associated density of states with various possible magnetic correlation wavevectors arising out of multiple pockets owing to the multiple orbitals and bilayer splitting. We also explore the effect of differences in the nature of Fermi surfaces suggested by various studies. |
| format | Article |
| id | doaj-art-cfb28362b0fc48c2a283f824b6a84329 |
| institution | OA Journals |
| issn | 1367-2630 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj-art-cfb28362b0fc48c2a283f824b6a843292025-08-20T02:25:40ZengIOP PublishingNew Journal of Physics1367-26302025-01-0127505350310.1088/1367-2630/add6ccPossible pairing states in the superconducting bilayer nickelateDheeraj Kumar Singh0https://orcid.org/0000-0001-8996-6773Garima Goyal1https://orcid.org/0000-0003-3620-6548Yunkyu Bang2Department of Physics and Material Science , Thapar Institute of Engineering and Technology, Patiala 147004, Punjab, IndiaDepartment of Physics and Material Science , Thapar Institute of Engineering and Technology, Patiala 147004, Punjab, IndiaDepartment of Physics, POSTECH , Pohang 790-784, Republic of Korea; Asia Pacific Center for Theoretical Physics , Pohang, Gyeongbuk 790-784, Republic of KoreaWe examine various possibilities for the pairing mechanisms in the recently discovered bilayer-nickelate superconductor within the Bardeen–Cooper–Schrieffer framework. Unlike earlier studies, where only a pure d -wave or sign-changing s -wave superconductivity instability was investigated, our study explores the possibilities of mixed-state superconducting (SC) instability, such as the one involving both d - and sign-changing s -waves. While assuming that the superconductivity arises because of the magnetic correlations, we examine the nature of the SC gap function associated density of states with various possible magnetic correlation wavevectors arising out of multiple pockets owing to the multiple orbitals and bilayer splitting. We also explore the effect of differences in the nature of Fermi surfaces suggested by various studies.https://doi.org/10.1088/1367-2630/add6ccbilayer nickelatepairingsuperconductivity |
| spellingShingle | Dheeraj Kumar Singh Garima Goyal Yunkyu Bang Possible pairing states in the superconducting bilayer nickelate New Journal of Physics bilayer nickelate pairing superconductivity |
| title | Possible pairing states in the superconducting bilayer nickelate |
| title_full | Possible pairing states in the superconducting bilayer nickelate |
| title_fullStr | Possible pairing states in the superconducting bilayer nickelate |
| title_full_unstemmed | Possible pairing states in the superconducting bilayer nickelate |
| title_short | Possible pairing states in the superconducting bilayer nickelate |
| title_sort | possible pairing states in the superconducting bilayer nickelate |
| topic | bilayer nickelate pairing superconductivity |
| url | https://doi.org/10.1088/1367-2630/add6cc |
| work_keys_str_mv | AT dheerajkumarsingh possiblepairingstatesinthesuperconductingbilayernickelate AT garimagoyal possiblepairingstatesinthesuperconductingbilayernickelate AT yunkyubang possiblepairingstatesinthesuperconductingbilayernickelate |