Superconductivity in a quintuple-layer square-planar nickelate

Pan, Grace A.; Segedin, Dan Ferenc; LaBollita, Harrison; Song, Qi; Nica, Emilian M.; Goodge, Berit H.; Pierce, Andrew T.; Doyle, Spencer; Novakov, Steve; Carrizales, Denisse Córdova; N’Diaye, Alpha T.; Shafer, Padraic; Paik, Hanjong; Heron, John T.; Mason, Jarad A.; Yacoby, Amir; Kourkoutis, Lena F.; Erten, Onur; Brooks, Charles M.; Botana, Antía S.; Mundy, Julia A.

doi:10.1038/s41563-021-01142-9

Cited by 203 publications

(131 citation statements)

References 35 publications

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“…A contrarian approach has been suggested by Dessau: while the focus has been on trying to increase the electron count to bring Pr-438 into the dome, another possibility is that the dz 2 band takes up some holes that need to be in the dx 2 -y 2 band, and that hole doping is really needed to tune into superconductivity. However, the recent report of superconductivity in n 5 Nd 6 Ni 5 O 12 films by Mundy et al [3] (Figures 1B, 2) argues that the electron doping argument is appropriate, although this does not rule out other approaches. Even in the absence of superconductivity, the trilayer materials may hold other interesting stories.…”

Section: Can Trilayer Materials Be Made Sc?mentioning

confidence: 96%

“…The nearest-neighbor exchange, J 1 63 meV, is roughly half that found in copper oxide materials. Mark Dean's group at Brookhaven National Lab has analyzed similar experiments on single crystals of trilayer La- [3,4] and [38]. 1C, right), finding a comparable value of J 1 69 meV, although the nominal doping concentration is quite different [49].…”

Section: Magnetismmentioning

confidence: 99%

“…Following on the direction suggested by the bulk trilayer nickelates, a strategy of growing multilayer thin-film nickelates has been pursued by Julia Mundy's group at Harvard through another tour de force in materials growth [3]. While in infinite layer (Nd,Sr)NiO 2 and the putative trilayer (Pr,Ce) 4 Ni 3 O 8 the doping is provided by aliovalent substitution on the A site, it is also possible to self-dope the higher order members of the R n+1 Ni n O 2n+2 series, as the formal Ni oxidation state follows (n+1)/n.…”

Section: Thin Filmsmentioning

confidence: 99%

“…With superconductivity discovered in epitaxial thin films of the "infinite-layer" d 9 nickelate (Nd,Sr)NiO 2 by Harold Hwang [2] and his Stanford collaborators in mid-2019 and more recently by Julia Mundy [3] of Harvard in the five-layer nickelate Nd 6 Ni 5 O 12 , a decades-long dream has been realized. Their discoveries and other exciting new findings in d 9 layered nickelate materials rest on breakthroughs in thin film and single crystal growth that have allowed old ideas to take on a new life, and renewed enthusiasm to explore the nickelates as a platform to understand high-T c superconductivity beyond cuprates, indeed a "new burst of bloom."…”

Section: Introductionmentioning

confidence: 99%

“…FIGURE 2 | Schematic unified electronic phase diagram of d 9 nickelates and cuprates as a function of d electron count. Inspired by Refs [3,4]. and[38].…”

mentioning

confidence: 99%

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A Nickelate Renaissance

Mitchell

2021

Front. Phys.

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The 2019 discovery of high temperature superconductivity in layered nickelate films, Nd1-xSrNiO2, has galvanized a community that has been studying nickelates for more than 30 years both as cuprate analogs and in their own right. On the surface, infinite layer nickelates, and their multilayer analogs, should be promising candidates based on our understanding of cuprates: square planar coordination and a parent d9 configuration that places a single hole in a dx2-y2 planar orbital makes nickelates seem poised for superconductivity. But creating crystals and films of sufficient quality of this d9 configuration in Ni1+ has proven to be a synthetic challenge, only recently overcome. These crystalline specimens are opening windows that shed new light on the cuprate-nickelate analogy and reveal nuances that leave the relationship between cuprates and nickelates very much an area open to debate. This Perspective gives a qualitative, phenomenological account of these newly discovered superconductors and multilayer members of the infinite layer nickelate family. The focus is on our current understanding of electronic and magnetic properties of these materials as well as some future opportunities, explored from the viewpoint of synthetic challenges and some suggested developments in materials discovery and growth to make further progress in this rejuvenated field.

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Section: Can Trilayer Materials Be Made Sc?mentioning

confidence: 96%

Section: Magnetismmentioning

confidence: 99%

Section: Thin Filmsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…FIGURE 2 | Schematic unified electronic phase diagram of d 9 nickelates and cuprates as a function of d electron count. Inspired by Refs [3,4]. and[38].…”

mentioning

confidence: 99%

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A Nickelate Renaissance

Mitchell

2021

Front. Phys.

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Advanced Characterizations for Plasmonic Nanostructures

2024

Plasmonic Metal Nanostructures

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Multiple Electronic Phase Transitions of NiO via Manipulating the NiO₆ Octahedron and Valence Control

Zhou,

Mao,

Cui

et al. 2023

Adv Funct Materials

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While the multiple Mottronic and electronic phase transitions as recently discovered in nickelates (e.g., ReNiO3) open up a new paradigm in correlated electronic applications, these applications are largely impeded by the intrinsic material metastability of the perovskite nickelates. Herein, the study demonstrates the analogous multiple electronic phase transition properties in the thermodynamically stable NiO, compared to ReNiO3, from both perspectives of band gap regulation and orbital filling regulation. The adjustment in band gap of NiO with t2g6eg2 orbital configuration is achieved via establishing biaxial tensile or compressive interfacial strains that increase or reduce the material resistivity, respectively. The relaxor ferroelectricity of 0.7Pb(Mg2/3Nb1/3)O3‐0.3PbTiO3 (PMNPT) further enables an electric field adjustable resistance switch (ΔR/R) within NiO/PMNPT heterostructure with higher performances (e.g., ΔR/R of 82% upon a bias voltage of 20 V) than the reported oxides/PMNPT heterostructure. Furthermore, the magnitude in resistance switch of the tensile strained NiO via hydrogenation associated Mottronic process reaches ≈1011 that exceeds the previously reported ones. This study highlights the higher material stability and easier growth of NiO, compared to ReNiO3, with analogous multiple Mottronic and electronic phase transition properties that pave the way to its practical applications in correlated electronics.

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Superconductivity in a quintuple-layer square-planar nickelate

Cited by 203 publications

References 35 publications

A Nickelate Renaissance

A Nickelate Renaissance

Advanced Characterizations for Plasmonic Nanostructures

Multiple Electronic Phase Transitions of NiO via Manipulating the NiO₆ Octahedron and Valence Control

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Superconductivity in a quintuple-layer square-planar nickelate

Cited by 203 publications

References 35 publications

A Nickelate Renaissance

A Nickelate Renaissance

Advanced Characterizations for Plasmonic Nanostructures

Multiple Electronic Phase Transitions of NiO via Manipulating the NiO6 Octahedron and Valence Control

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Product

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Multiple Electronic Phase Transitions of NiO via Manipulating the NiO₆ Octahedron and Valence Control