Quantum Molecular Tectonics. – (Maarten Goesten / LCPQ / Seminar). – 16/05/2025, 11H

Séminaire LCPQ

Maarten Goesten (Aarhus University)

Seminar LCPQ, 16/05/2025, 11H, 3R4, salle de conférence

Summary :
In this talk, I will show how nonlocal physics emerges from molecular building blocks with well-defined geometries and chemical properties.

In Quantum Molecular Tectonics, one applies reticular chemistry for the self-assembly of Metal-Organic Frameworks (MOFs) with diradical character, and integrates this with topological band theory. The idea, in essence, is the following: the topology of an electronic band structure is controlled by the symmetries of the orbitals at different crystallographic sites. Due to their modular make-up, MOFs offer direct control over the orbitals at these different sites, as well as the diradical character they induce in the framework. This offers control over the spatial separation between entangled spins, and also opens up a possibility to topologically protect this entanglement.

In extending on new nonlocal physics, I will pay special attention to a new type of electronic state: the pore band. This highly delocalized band describes charge density that is not centered around nuclei, but rather within the tubular pores of the system. Strongly related to the well-known interlayer band that is found in graphite, it can become occupied, and it plays a significant role in controlling band structure topology.