SKM 2023 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 44: Focus Session: Superconducting Nickelates I
Donnerstag, 30. März 2023, 09:30–13:00, HSZ 03
The discovery of superconductivity in hole-doped infinite-layer nickelates
in 2019 has brought a breath of fresh air to the research on unconventional superconducting materials. These nickel oxides structurally closely resemble high-Tc cuprates and show a formally analogous nickel d9−δ
electronic configuration. Other striking similarities with cuprates have been recently reported, such as a dome-like doping dependence of the superconducting phase, sizeable antiferromagnetic exchange couplings, and a charge order instability in the underdoped region of the phase diagram.
Likewise, a number of studies identified clear differences, e.g. concerning selected transport behavior as well as magnetic properties, and with regard to the relevance of oxygen-2p states. It is precisely this combination of strong similarities and specific differences that promises new, game-changing insights into the origin of high-temperature superconductivity.
The goal of this focus seesion is to bring together the latest results for low-valence nickelates from studies of structure, electronic structure, magnetism, charge density waves and superconductivity, and thus setting the stage for a coherent picture of these complex quantum materials.
Organizers: Eva Benckiser (Max-Planck-Institute for Solid State Research, Stuttgart) and
Frank Lechermann (Ruhr-Universität Bochum)
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09:30 | TT 44.1 | Hauptvortrag: Atomic-scale insights to lattice and electronic structure in superconducting nickelates — •Berit Goodge |
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10:00 | TT 44.2 | Hauptvortrag: Nickelate and cuprate superconductors: Similar yet different — •Vamshi Mohan Katukuri |
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10:30 | TT 44.3 | Hauptvortrag: Superconducting instabilities in strongly-correlated infinite-layer nickelates — •Andreas Kreisel |
| 11:00 | 15 min. break | ||
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11:15 | TT 44.4 | Hauptvortrag: Infinite-layer nickelate thin films: From synthesis to spectroscopy — •Daniele Preziosi |
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11:45 | TT 44.5 | Hauptvortrag: Superconducting layered square-planar nickelates: Synthesis, properties, and progress — •Grace Pan, Dan Ferenc Segedin, Harrison LaBollita, Qi Song, Berit Goodge, Lena Kourkoutis, Charles Brooks, Antia Botana, and Julia Mundy |
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12:15 | TT 44.6 | Nickelate superconductors: One-band Hubbard model plus decoupled A pocket picture — •Karsten Held, Motoharu Kitatani, Liang Si, and Paul Worm |
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12:30 | TT 44.7 | Single-layer T’ nickelates — Kerstin Wissel, Fabio Bernardini, Heesu Oh, Sami Vasala, Björn Blaschkowski, Pieter Glatzel, Matthias Bauer, Olivier Clemens, and •Andrés Cano |
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12:45 | TT 44.8 | Synthesis and physical properties of perovskite and infinite-layer nickelate crystals — •Pascal Puphal, Vignesh Sundaramurthy, Valentin Zimmermann, Björn Wehinger, Gaston Garbarino, Kathrin Küster, Ulrich Starke, Jürgen Nuss, Bernhard Keimer, Masahiko Isobe, and Matthias Hepting |