PGI Colloquium: Prof. Anna Böhmer, Experimentalphysik IV, Ruhr-Universität Bochum, NB 4/125

Please note: You will receive the link to the online talk in the e-mail invitation, usually sent out a few days before the lecture takes place. It is also available on request from the contact person below.

Electronic nematicity: beyond the model cases

The spontaneous reduction of rotational symmetry in a crystalline solid driven by an electronic mechanism is referred to as electronic nematicity. This phenomenon—initially thought to be rare—has now been observed in an increasing number of strongly interacting systems. In particular, the ubiquitous presence of nematicity in a number of unconventional superconductors suggests its importance in developing a unified understanding of their intricate phase diagrams and superconducting pairing. In this regard, the iron-based superconductors present an ideal material platform to study electronic nematicity. Here, I will present an overview of this ‘prototypical’ nematicity of the iron-based superconductors and also show results on the more exotic iron-based systems on the road towards a more universal understanding of this correlated-electron phenomenon.

Reference: Anna E. Böhmer, Jiun-Haw Chu, Samuel Lederer and Ming Yi, Nematicity and nematic fluctuations in iron-based superconductors, Nature Physics 18, 1412 (2022).