Silke Bühler-Paschen (TU Wien): Quantum phases driven by strong correlations

Montag, 17. Juni 2024 13:30

Ort: Lise-Meitner-Hörsaal, Strudlhofgasse 4, 1090 Wien

Vortrag im Rahmen des University of Vienna Physics Colloquiums

Strong correlations enrich the landscape of quantum phases, which is being realized in an increasing number of materials families – from the cuprate high-temperature superconductors and heavy fermion compounds to new platforms for strong correlation physics such as frustrated lattices and moiré heterostructures [1]. I will show why heavy fermion compounds are a particularly versatile platform for systematic studies [2]. After an overview, I will highlight recent results that shed new light on a key overarching phenomenon: the "strange metal" state. These include shot noise experiments [3] and first information on entanglement properties [4]. I will also make connection to the field of strongly correlated topological semimetals [5], and discuss the role that strange metal quantum criticality appears to plays there [6].

[1] J. G. Checkelsky et al., Nat. Rev. Mater., published online, Feb. 20 (2024).
[2] S. Paschen and Q. Si, Nat. Rev. Phys. 3, 9 (2021).
[3] L. Chen et al., Science 382, 907-91 (2023).
[4] F. Mazza et al., arXiv:2403.12779 (2024).
[5] D. M. Kirschbaum et al., J. Phys. Mater. 7, 012003 (2024).
[6] D. M. Kirschbaum et al., in preparation (2024).

A light lunch buffet will be offered before the lecture at around 13:00.


Lise-Meitner-Hörsaal, Strudlhofgasse 4, 1. Stock

Silke Bühler-Paschen (© P. Bermudez)