This PhD scholarship at KU Leuven offers an exciting opportunity to join the Quantum Solid-state Physics (QSP) research unit within the Department of Physics and Astronomy. QSP is renowned for its experimental research into solid-state systems, focusing on quantum phenomena at the atomic and microscopic scale. The group investigates the origin and tunability of functional electronic properties—such as magnetism, superconductivity, and semiconductivity—in systems ranging from single-atom defects to nanoscale clusters, 2D materials, thin films, and 3D heterostructures. The successful candidate will join the cluster research team led by Professors Peter Lievens and Ewald Janssens. The team is actively engaged in studies of optical properties, magnetism, and chemical reactivity of metal and carbon hybrid clusters. Current projects include exploring the interaction of hydrogen with gas-phase carbon-metal clusters and investigating carbon dioxide reduction using fullerene-transition metal hybrids as catalysts. Another research focus is the systematic study of magnetism in rare earth metal clusters, particularly how doping with 3d transition metals affects their magnetic properties. Experimental work will involve advanced techniques such as mass spectrometry, infrared and visible light spectroscopy using OPO/OPA tunable lasers, in-beam reactivity studies, and Stern-Gerlach magnetic deflection experiments. KU Leuven’s state-of-the-art setups feature laser ablation sources for producing metal-doped carbon clusters, fullerenes with transition metals, and nanoalloys of transition metal and rare earth elements. Additionally, far-infrared spectroscopy experiments will be conducted at the FELIX free electron laser facility in The Netherlands, providing access to unique research infrastructure. Applicants should be motivated experimental scientists with a master’s degree in physics, chemistry, or a closely related field. Preferred qualifications include knowledge in cluster science, nanoscience, and/or laser spectroscopy, as well as experience with high-vacuum technology, molecular beams, infrared lasers, cluster sources, and mass spectrometry. The position requires structured, transparent, and accurate work habits, strong teamwork and communication skills, and a passion for research. English proficiency is essential due to the international and collaborative nature of the team. The scholarship offers a 4-year funded PhD position, including a stipend and research support. The successful candidate will also participate in teaching assistant tasks. KU Leuven is committed to fostering an inclusive, respectful, and socially safe environment, embracing diversity and equal opportunity for all. The university is located in Leuven, a vibrant and multicultural city in the heart of Europe, just 20 minutes from Brussels. Applications are open until January 31, 2026. Interested candidates should apply online via the KU Leuven jobsite. For further information, contact Prof. Peter Lievens or Prof. Ewald Janssens by email. Join a dynamic team and contribute to cutting-edge research in quantum solid-state physics and materials science.

This postdoctoral scholarship at KU Leuven's Quantum Solid-state Physics (QSP) research unit offers an exciting opportunity to join a dynamic team investigating the physical and chemical properties of transition metal clusters and hybrid carbon-metal clusters. The QSP unit specializes in experimental research on quantum phenomena in solid-state systems, focusing on the tunability of functional electronic properties such as magnetism, superconductivity, and semiconducting behavior in systems ranging from single-atom defects to nanoscale clusters and heterostructures. The successful candidate will work closely with Professors Peter Lievens and Ewald Janssens, contributing to ongoing projects that explore magnetism, optical properties, and chemical reactivity of hybrid clusters. Key research topics include the interaction of hydrogen with gas-phase carbon-metal clusters and the use of fullerene-transition metal hybrids as catalysts for carbon dioxide reduction. Another major focus is the systematic study of cluster magnetism, particularly how doping Rh, Ho, and Tm clusters with Co and Fe atoms affects their magnetic properties. The postdoc will coordinate daily activities in the gas-phase cluster laboratories, support Master's and PhD students, and develop independent research. Experimental techniques include molecular beam studies using mass spectrometry, in-beam reactivity analysis, infrared and visible light spectroscopy with OPO/OPA tunable lasers, and Stern-Gerlach magnetic deflection experiments. Most work will be conducted in KU Leuven's molecular beam setups, with additional far-infrared spectroscopy experiments at the FELIX free electron laser facility in The Netherlands. The position is fully funded for two years, offering a competitive bursary and access to university infrastructure. Applicants should have a PhD in physics, chemistry, or a related field, with essential experience in high-vacuum technology and molecular beam setups. Skills in laser spectroscopy, cluster sources, ion guiding and trapping, mass spectrometry, and quantum chemical calculations are highly valued. The role requires strong teamwork, communication skills in English, and a passion for research. KU Leuven provides an inclusive and supportive environment, and the position is based in Leuven, a vibrant city near Brussels. The start date is as soon as possible, and the application deadline is November 14, 2025.