Correlations and Topology in Quantum Materials

Spanish-German WE-Heraeus-Seminar

21 Jan - 24 Jan 2024


Physikzentrum Bad Honnef

Scientific organizers:

Dr. Leni Bascones, ICMM‐CSIC Madrid, Spain • Prof. Dr. Hermann Suderow, U Madrid, Spain • Prof. Dr. Roser Valenti, U Frankfurt


Recent insight thanks to improved methods for calculating the band structure of solids has shown that many compounds might host topological excitations at the surface, potentially presenting dissipationless transport and novel fermionic excitations, such as Dirac, Weyl or multiple fold fermions. This includes many bulk  systems but also in particular graphene and layered quasi two-dimensional compounds. On the other hand, some of these systems
present novel phases emerging from the electronic interactions, which have been traditionally difficult to address using band structure calculations. These novel phases include topologically non trivial phases, providing for example unconventional superconductivity, anomalous magnetism, nematicity or anomalous charge density waves.

The purpose of this seminar is to bring together groups addressing the problem of quantum phases of bulk layered quasi two-dimensional materials and single layer systems from different perspectives. We aim to create a fertile ground for new collaborations, particularly among researchers of Spanish and German institutions.

There are ongoing collaborations in the subject, often centered around traditional approaches. Many new experiments show that electronic correlations are important. Taking electronic correlations into account and understanding the full breadth of their consequences requires a collaborative effort which provides a fertile ground to reinforce established collaborations and initiate new ones.

We expect around 60 participants, mostly from Spain and Germany and will foster young students and researchers, providing the opportunity to present their work.

The conference language will be English. The Wilhelm and Else Heraeus-Foundation bears the cost of full-board accommodation for all participants.