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Superconducting phase diagram of multilayer square-planar nickelates.

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Title: Superconducting phase diagram of multilayer square-planar nickelates.
Authors: Pan, Grace A. (AUTHOR), Segedin, Dan Ferenc (AUTHOR), TenHuisen, Sophia F. R. (AUTHOR), Bhatt, Lopa (AUTHOR), LaBollita, Harrison (AUTHOR), Jiang, Abigail Y. (AUTHOR), Song, Qi (AUTHOR), Turkiewicz, Ari B. (AUTHOR), Baykusheva, Denitsa R. (AUTHOR), Nag, Abhishek (AUTHOR), Agrestini, Stefano (AUTHOR), Zhou, Ke-Jin (AUTHOR), Pelliciari, Jonathan (AUTHOR), Bisogni, Valentina (AUTHOR), Zhou, Hua (AUTHOR), Dean, Mark P. M. (AUTHOR), Paik, Hanjong (AUTHOR), Muller, David A. (AUTHOR), Kourkoutis, Lena F. (AUTHOR), Brooks, Charles M. (AUTHOR)
Source: Science. 6/25/2026, Vol. 392 Issue 6805, p1390-1395. 6p.
Subjects: Superconductivity, Phase diagrams, Heterostructures, Electronic structure, High temperature superconductors, Nickel
Abstract: The discovery of superconductivity in square-planar nickelates has offered a rich materials platform to explore the origins of high-temperature superconductivity. However, experimental investigations have largely been limited to the infinite-layer RNiO2 (R, rare earth) nickelates. We constructed a phase diagram of multilayer square-planar Ndn+1NinO2n+2 compounds and found signatures of superconductivity for dimensionality n = 4 to 8. Upon decreasing n, the superconducting anisotropy evolves owing to 4f electron effects, and electronic structure characteristics approach cuprate-like behavior. Magnetic fluctuations persist from within the superconducting regime and into the overdoped, nonsuperconducting regime. The superconducting regime overlaps with that of chemically doped infinite-layer nickelates, demonstrating underlying commonalities as well as differences across varying structural realizations of square-planar nickelates. Our work establishes this layered template for creating new nickel-based superconductors. Editor's summary: Superconductivity in the nickelates, layered compounds with notable similarities to the cuprates, can be tuned by chemical doping and by applying pressure. Pan et al. used a different approach: varying the number of NdNiO2 layers (n) sandwiched between NdO2 layers, synthesizing a series of Ndn+1NinO2n+2 compounds. This structural tuning enabled the researchers to access a large range of behaviors, including that of cuprate-like materials at smaller n. —Jelena Stajic [ABSTRACT FROM AUTHOR]
Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Superconducting phase diagram of multilayer square-planar nickelates.
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  Data: <searchLink fieldCode="AR" term="%22Pan%2C+Grace+A%2E%22">Pan, Grace A.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Segedin%2C+Dan+Ferenc%22">Segedin, Dan Ferenc</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22TenHuisen%2C+Sophia+F%2E+R%2E%22">TenHuisen, Sophia F. R.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bhatt%2C+Lopa%22">Bhatt, Lopa</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22LaBollita%2C+Harrison%22">LaBollita, Harrison</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jiang%2C+Abigail+Y%2E%22">Jiang, Abigail Y.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Song%2C+Qi%22">Song, Qi</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Turkiewicz%2C+Ari+B%2E%22">Turkiewicz, Ari B.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Baykusheva%2C+Denitsa+R%2E%22">Baykusheva, Denitsa R.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nag%2C+Abhishek%22">Nag, Abhishek</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Agrestini%2C+Stefano%22">Agrestini, Stefano</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Ke-Jin%22">Zhou, Ke-Jin</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pelliciari%2C+Jonathan%22">Pelliciari, Jonathan</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bisogni%2C+Valentina%22">Bisogni, Valentina</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Hua%22">Zhou, Hua</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dean%2C+Mark+P%2E+M%2E%22">Dean, Mark P. M.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Paik%2C+Hanjong%22">Paik, Hanjong</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Muller%2C+David+A%2E%22">Muller, David A.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kourkoutis%2C+Lena+F%2E%22">Kourkoutis, Lena F.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Brooks%2C+Charles+M%2E%22">Brooks, Charles M.</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="DE" term="%22Superconductivity%22">Superconductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+diagrams%22">Phase diagrams</searchLink><br /><searchLink fieldCode="DE" term="%22Heterostructures%22">Heterostructures</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+structure%22">Electronic structure</searchLink><br /><searchLink fieldCode="DE" term="%22High+temperature+superconductors%22">High temperature superconductors</searchLink><br /><searchLink fieldCode="DE" term="%22Nickel%22">Nickel</searchLink>
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  Data: The discovery of superconductivity in square-planar nickelates has offered a rich materials platform to explore the origins of high-temperature superconductivity. However, experimental investigations have largely been limited to the infinite-layer RNiO2 (R, rare earth) nickelates. We constructed a phase diagram of multilayer square-planar Ndn+1NinO2n+2 compounds and found signatures of superconductivity for dimensionality n = 4 to 8. Upon decreasing n, the superconducting anisotropy evolves owing to 4f electron effects, and electronic structure characteristics approach cuprate-like behavior. Magnetic fluctuations persist from within the superconducting regime and into the overdoped, nonsuperconducting regime. The superconducting regime overlaps with that of chemically doped infinite-layer nickelates, demonstrating underlying commonalities as well as differences across varying structural realizations of square-planar nickelates. Our work establishes this layered template for creating new nickel-based superconductors. Editor's summary: Superconductivity in the nickelates, layered compounds with notable similarities to the cuprates, can be tuned by chemical doping and by applying pressure. Pan et al. used a different approach: varying the number of NdNiO2 layers (n) sandwiched between NdO2 layers, synthesizing a series of Ndn+1NinO2n+2 compounds. This structural tuning enabled the researchers to access a large range of behaviors, including that of cuprate-like materials at smaller n. —Jelena Stajic [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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