On Monday, November 27, 2023, at 12:00 c.t., the next date of our Physics Colloquium will take place.
The speaker is Prof. Dr. Christian Hess (Bergische Universität Wuppertal) on the topic "Transport and Scattering in Exotic Quantum Matter".
Key aspects of today's research on quantum matter are exotic ground states which, for example, feature fractionalized or topological excitations. In this talk I will provide an overview on pertinent research activities of the experimental solid state physics group at the University of Wuppertal with a focus on the transport properties of low-dimensional and frustrated quantum magnets. Typically, these system possess strongly quantum disordered ground states, and yet well-defined emergent fractionalized excitations with peculiar properties. I will first introduce the nature of such fractionalized excitations - the spinons - in 1D Heisenberg chains and demonstrate the ballistic nature of their heat transport.
Afterwards, ongoing research on the thermal Hall effect in Kitaev materials which are candidates for Majorana fermion and vison excitations as well as the ultra-low-temperature transport of kagome materials will be discussed
Abstract of the lecture by Prof. Hess
The introduction will be made by Prof. Dr. Anna Böhmer.
The faculty cordially invites all interested parties. The event will take place in the lecture hall HZO 20. Before the colloquium we offer coffee and cookies.
All dates of the Physics Colloquium can be found here.