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Chen X, Zhang J, Thind AS, Sharma S, LaBollita H, Peterson G, Zheng H, Phelan DP, Botana AS, Klie RF, Mitchell JF. Polymorphism in the Ruddlesden-Popper Nickelate La 3Ni 2O 7: Discovery of a Hidden Phase with Distinctive Layer Stacking. J Am Chem Soc 2024; 146:3640-3645. [PMID: 38294831 DOI: 10.1021/jacs.3c14052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
We report the discovery of a novel form of Ruddlesden-Popper (RP) nickelate that stands as the first example of long-range, coherent polymorphism in this class of inorganic solids. Rather than the well-known, uniform stacking of perovskite blocks ubiquitously found in RP phases, this newly discovered polymorph of the bilayer RP phase La3Ni2O7 adopts a novel stacking sequence in which single-layer and trilayer blocks of NiO6 octahedra alternate in a "1313" sequence. Crystals of this new polymorph are described in space group Cmmm, although we note evidence for a competing Imam variant. Transport measurements at ambient pressure reveal metallic character with evidence of a charge density wave transition with an onset at T ≈ 134 K. The discovery of such polymorphism could reverberate to the expansive range of science and applications that rely on RP materials, particularly the recently reported signatures of superconductivity in bilayer La3Ni2O7 with Tc as high as 80 K above 14 GPa.
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Affiliation(s)
- Xinglong Chen
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Junjie Zhang
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Arashdeep S Thind
- Department of Physics, University of Illinois─Chicago, Chicago, Illinois 60607, United States
| | - Shekhar Sharma
- Department of Physics and Astronomy, Arizona State University, Tempe, Arizona 85218, United States
| | - Harrison LaBollita
- Department of Physics and Astronomy, Arizona State University, Tempe, Arizona 85218, United States
| | - Gordon Peterson
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Hong Zheng
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Daniel P Phelan
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Antia S Botana
- Department of Physics and Astronomy, Arizona State University, Tempe, Arizona 85218, United States
| | - Robert F Klie
- Department of Physics, University of Illinois─Chicago, Chicago, Illinois 60607, United States
| | - J F Mitchell
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
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Pan GA, Ferenc Segedin D, LaBollita H, Song Q, Nica EM, Goodge BH, Pierce AT, Doyle S, Novakov S, Córdova Carrizales D, N'Diaye AT, Shafer P, Paik H, Heron JT, Mason JA, Yacoby A, Kourkoutis LF, Erten O, Brooks CM, Botana AS, Mundy JA. Superconductivity in a quintuple-layer square-planar nickelate. Nat Mater 2022; 21:160-164. [PMID: 34811494 DOI: 10.1038/s41563-021-01142-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 09/23/2021] [Indexed: 06/13/2023]
Abstract
Since the discovery of high-temperature superconductivity in copper oxide materials1, there have been sustained efforts to both understand the origins of this phase and discover new cuprate-like superconducting materials2. One prime materials platform has been the rare-earth nickelates and, indeed, superconductivity was recently discovered in the doped compound Nd0.8Sr0.2NiO2 (ref. 3). Undoped NdNiO2 belongs to a series of layered square-planar nickelates with chemical formula Ndn+1NinO2n+2 and is known as the 'infinite-layer' (n = ∞) nickelate. Here we report the synthesis of the quintuple-layer (n = 5) member of this series, Nd6Ni5O12, in which optimal cuprate-like electron filling (d8.8) is achieved without chemical doping. We observe a superconducting transition beginning at ~13 K. Electronic structure calculations, in tandem with magnetoresistive and spectroscopic measurements, suggest that Nd6Ni5O12 interpolates between cuprate-like and infinite-layer nickelate-like behaviour. In engineering a distinct superconducting nickelate, we identify the square-planar nickelates as a new family of superconductors that can be tuned via both doping and dimensionality.
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Affiliation(s)
- Grace A Pan
- Department of Physics, Harvard University, Cambridge, MA, USA
| | | | | | - Qi Song
- Department of Physics, Harvard University, Cambridge, MA, USA
| | - Emilian M Nica
- Department of Physics, Arizona State University, Tempe, AZ, USA
| | - Berit H Goodge
- School of Applied and Engineering Physics, Cornell University, Ithaca, NY, USA
- Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY, USA
| | - Andrew T Pierce
- Department of Physics, Harvard University, Cambridge, MA, USA
| | - Spencer Doyle
- Department of Physics, Harvard University, Cambridge, MA, USA
| | - Steve Novakov
- Department of Physics, University of Michigan, Ann Arbor, MI, USA
| | | | - Alpha T N'Diaye
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Padraic Shafer
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Hanjong Paik
- Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM), Cornell University, Ithaca, NY, USA
| | - John T Heron
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Jarad A Mason
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA
| | - Amir Yacoby
- Department of Physics, Harvard University, Cambridge, MA, USA
| | - Lena F Kourkoutis
- School of Applied and Engineering Physics, Cornell University, Ithaca, NY, USA
- Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY, USA
| | - Onur Erten
- Department of Physics, Arizona State University, Tempe, AZ, USA
| | | | - Antia S Botana
- Department of Physics, Arizona State University, Tempe, AZ, USA.
| | - Julia A Mundy
- Department of Physics, Harvard University, Cambridge, MA, USA.
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Akram M, LaBollita H, Dey D, Kapeghian J, Erten O, Botana AS. Moiré Skyrmions and Chiral Magnetic Phases in Twisted CrX 3 (X = I, Br, and Cl) Bilayers. Nano Lett 2021; 21:6633-6639. [PMID: 34339218 DOI: 10.1021/acs.nanolett.1c02096] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We present a comprehensive theory of the magnetic phases in twisted bilayer chromium trihalides through a combination of first-principles calculations and atomistic simulations. We show that the stacking-dependent interlayer exchange leads to an effective moiré field that is mostly ferromagnetic with antiferromagnetic patches. A wide range of noncollinear magnetic phases can be stabilized as a function of the twist angle and Dzyaloshinskii-Moriya interaction as a result of the competing interlayer antiferromagnetic coupling and the energy cost for forming domain walls. In particular, we demonstrate that for small twist angles various skyrmion crystal phases can be stabilized in both CrI3 and CrBr3. Our results provide an interpretation for the recent observation of noncollinear magnetic phases in twisted bilayer CrI3 and demonstrate the possibility of engineering further nontrivial magnetic ground states in twisted bilayer chromium trihalides.
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Affiliation(s)
- Muhammad Akram
- Department of Physics, Arizona State University, Tempe, Arizona 85287, United States
| | - Harrison LaBollita
- Department of Physics, Arizona State University, Tempe, Arizona 85287, United States
| | - Dibyendu Dey
- Department of Physics, Arizona State University, Tempe, Arizona 85287, United States
| | - Jesse Kapeghian
- Department of Physics, Arizona State University, Tempe, Arizona 85287, United States
| | - Onur Erten
- Department of Physics, Arizona State University, Tempe, Arizona 85287, United States
| | - Antia S Botana
- Department of Physics, Arizona State University, Tempe, Arizona 85287, United States
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