Joint Theory Seminar of European XFEL, CFEL & University of Hamburg

The curious case of superconducting infinite-layer nickelates

by Frank Lechermann (European XFEL and Flatiron Institute)

Europe/Berlin
Zoom

Zoom

Description

The discovery of superconductivity in Sr-doped thin films of
infinite-layer NdNiO2 in summer 2019 triggered an overwhelming
research interest in these materials. Because of their similarity
to high-Tc cuprates concerning structure and formal 3d^9 oxidation
state, the long sought-after stable 'cuprate-akin' pairing in
nickelates had apparently been found.
However, several striking differences to cuprate physics are
revealed and already basic electronic structure features
of infinite-layer nickelates are still a matter of intense
debate.

In this talk I will provide a brief introduction to the lively
research on infinite-layer nickelates and show that latest developments
in the first-principles approach to correlated materials are necessary
to face the challenges of these fascinating systems. The case for
manifest multiorbital Ni-eg physics to explain the various normal-state
electronic regimes with doping will be made. 

Zoom link:

https://xfel.zoom.us/j/92259494299pwd=NCtZWGdYaVNaNzhhUUtITDdRTzBVUT09
Meeting ID: 922 5949 4299
Passcode: 536857
One tap mobile
+496938079883,,92259494299# Germany

 +496950502596,,92259494299# Germany
Dial by your location
+49 69 3807 9883 Germany
 +49 695 050 2596 Germany
 +49 69 7104 9922 Germany

+49 30 5679 5800 Germany

Meeting ID: 922 5949 4299
 Find your local number: 

https://xfel.zoom.us/u/alESQbXwW
Join by Skype for Business
 https://xfel.zoom.us/skype/92259494299

Organized by

Nils Brouwer