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MA: Fachverband Magnetismus

MA 6: Molecular Magnetism

MA 6.1: Hauptvortrag

Montag, 18. März 2024, 09:30–10:00, EB 301

Studying single molecule magnets for quantum technologies — •Wolfgang Wernsdorfer — PHI and IQMT, KIT, Karlsruhe, Germany

Single molecule magnets (SMMs) have been proposed for applications in high-density storage, quantum sensing, quantum simulation, quantum computing, and spintronics applications. Bulk magnetometric and spectroscopic techniques of molecular systems have allowed the observation of remarkable quantum effects in SMMs, such as the observation of an energy barrier to the reversal of the magnetisation and quantum tunnelling of the magnetisation Over the past 10 years, scanning tunnelling microscopy of SMMs and single-molecule devices architectures, such as spin valves and spin transistors, have shed light into the quantum properties of SMMs at single molecule level. More recently, new techniques, where the spin-degrees of freedom in SMMs can be read-out by photons, are being studied. Here, we review key techniques allowing the observation of quantum effects, important for the initialisation, control and read-out of the states of the SMMs, ultimately leading to the implementation of SMMs is technological applications. In the long term, chemically designed quantum architectures might have the potential to outperform existing platforms in terms of scalability, switchability, controllability, qubit density, and integrability.

Keywords: molecular qubit; quantum science; quantum technology; spin qubit; single-molecule device