Special seminar - Spectroscopy of collective modes in 4d-metal compounds

Event Date:
2019-12-11T10:30:00
2019-12-11T11:30:00
Event Location:
Hennings 318
Speaker:
Bernhard Keimer - Max Planck Institute
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Intended Audience:
Public
Event Information:

Abstract

Quantum materials with 4d valence electrons serve as a platform for fundamental concepts such as unconventional superconductivity, Kitaev spin liquids, and solid-state analogues of the Higgs mode in particle physics. However, basic questions about the electronic structure of these materials remain unanswered, because key interaction parameters (including the Hund’s coupling, spin–orbit coupling, and exchange interactions) are comparable in magnitude and their interplay is poorly understood. We will discuss recent inelastic neutron and x-ray scattering experiments on spin waves, spin-orbit excitons, and spin-state transitions, which provide new insight into these interactions and their influence on the phase behavior of model materials including Ca2RuO4, Ca3Ru2O7, SrRu2O6, and RuCl3.

 

 
 
Add to Calendar 2019-12-11T10:30:00 2019-12-11T11:30:00 Special seminar - Spectroscopy of collective modes in 4d-metal compounds Event Information: Abstract Quantum materials with 4d valence electrons serve as a platform for fundamental concepts such as unconventional superconductivity, Kitaev spin liquids, and solid-state analogues of the Higgs mode in particle physics. However, basic questions about the electronic structure of these materials remain unanswered, because key interaction parameters (including the Hund’s coupling, spin–orbit coupling, and exchange interactions) are comparable in magnitude and their interplay is poorly understood. We will discuss recent inelastic neutron and x-ray scattering experiments on spin waves, spin-orbit excitons, and spin-state transitions, which provide new insight into these interactions and their influence on the phase behavior of model materials including Ca2RuO4, Ca3Ru2O7, SrRu2O6, and RuCl3.       Event Location: Hennings 318