Workshop on Flat Bands, Strong Correlations and Topology
November 6 - 8, 2023
Rationale and Scope:
Recent years have seen increasing recognition of the exciting potential of correlated flat band materials for merging strong correlations beyond the single particle picture and the topology of electronic wave functions. This has led to the prediction and/or discovery of a wide range of novel phenomena, such as unconventional superconductivity, nematicity, strange metallicity, generalized Wigner crystal state, fractional Chern insulator states, time reversal symmetry breaking charge orders, exotic magnetism and more. The potential is rooted in the expectation that systems exhibiting a large density of states near the Fermi level can respond to instabilities under different types of interaction, because the Coulomb energy is readily on the same order as the electronic kinetic energy. The emerging success of utilizing moiré superlattices and geometrically frustrated kagome lattices to produce flat bands with quenched kinetic energy has brought new surprises, puzzles, and challenges.
The workshop, jointly organized by the Rice Center for Quantum Materials (RCQM) and Extreme Quantum Materials Alliance (eQMA), brought together a diverse pool of theoretical and experimental experts on various aspects of topology and strong correlations in flat band systems and related quantum materials. It addressed the exciting progress made so far and the future directions of the field. Topics discussed during the workshop included:
- New design principles for tunable topological flat bands in quantum materials
- Latest progress on identifying new quantum phases in topological flat bands
- Theoretical modeling of topology in the regime of strong electron correlations
- New experimental methodologies for probing strongly correlated topology
Information:
Location: Rice University
Invited Speakers:
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Recent developments on moiré superlattices
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Emergent orders and excitations in kagome materials
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Flat band and correlated superconductors
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Topology and correlation in strongly interacting systems
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New strategies for constructing and probing topological flat bands
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Format:
The three-day workshop incorporated invited speaker slots as well as two poster sessions to engage junior participants. We selected several contributed talks from abstracts submitted for poster presentations.
Organizers:
Pengcheng Dai (Rice University)
Qimiao Si (Rice University)
Yonglong Xie (Rice University)
Ming Yi (Rice University)
