Dresden 2020 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 20: Focus Session: The Nickel Age of Superconductivity: Cuprates Reloaded or Something New?

TT 20.3: Hauptvortrag

Dienstag, 17. März 2020, 10:30–11:00, HSZ 03

Superconductivity in Nickelates: Similarities and Differences from Cuprates — •Michael Norman — Materials Science Division, Argonne National Laboratory, USA

The recent discovery of superconductivity in Sr-doped NdNiO2 has refocused attention on the relation of nickelates to cuprates. First, I review the experimental situation, including earlier work on trilayer nickelates, as well as the new work on infinite-layer nickelates. Next, I comment on various proposed models, including charge-transfer, Mott, and Kondo. Then, I relate these models to the electronic structure of nickelates, contrasting this with cuprates. Finally, I comment on relevant parameters in regards to the observation of superconductivity.

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