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HL: Fachverband Halbleiterphysik

HL 6: Focus Session: Tunable Correlations in van der Waals Quantum Materials I (joint session TT/DS/HL)

Montag, 9. März 2026, 15:00–18:15, HSZ/0003

The library of strongly correlated layered materials has intensively grown, giving now access to the full breadth of symmetry broken emergent phases, ranging from excitonic, to magnetic, superconducting, or Mott insulating ground states. At the same time, also the ways of tuning these correlated phases in 2D are steadily developing, e.g, via twisting or stacking, engineered defects, or applied external fields. Taken together, this nowadays allows for sheer endless possibilities to tailor layered correlated quantum materials on demand opening unprecedented avenues towards both deep insights into emergent phenomena and novel functionalization routes based on many-body properties.

This focus session will highlight recent advancements and breakthroughs achieved in this field, which we expect to be of great interest to the broadest audience and to stimulate discussions crossing field boundaries.

Coordinators: Lennart Klebl (Uni Würzburg, Jonas Profe (Uni Frankfurt), Malte Rösner (Uni Bielefeld), Ursula Wurstbauer (Uni Münster)

	15:00	HL 6.1	Topical Talk: Charge confinement in twisted bilayer graphene — •Christoph Stampfer
	15:30	HL 6.2	Topical Talk: Tuning Coulomb interactions and Hubbard bands in 1T-TaS2 — •Anna Galler
	16:00	HL 6.3	Topical Talk: Optical signatures of interlayer electron coherence in a bilayer semiconductor — •Nadine Leisgang, Xiaoling Liu, Pavel Dolgirev, Philip Kim, and Mikhail Lukin
	16:30		15 min. break
	16:45	HL 6.4	Topical Talk: Faithful modeling of quantum geometry and electronic correlations in van der Waals heterostructures — •Ammon Fischer
	17:15	HL 6.5	Topical Talk: Mesoscale Atomic Engineering in a Crystal Lattice — •Julian Klein
	17:45	HL 6.6	Interlayer electrodynamics of CDWs in van der Waals materials and heterostructures — Achyut Tiwari, Renjith Mathew Roy, Maxim Wenzel, Christian Prange, Bruno Gompf, and •Martin Dressel
	18:00	HL 6.7	Enhancing Plasmonic Superconductivity in Layered Materials via Dynamical Coulomb Engineering — •Yann in ’t Veld, Mikhail I. Katsnelson, Andrew J. Millis, and Malte Rösner