Jonatan Holmér
Jonatan received his Master of science in physics (2017) at University of Gothenburg, and his PhD in physics (2024) at Chalmers University of Technology. His doctoral research focused on in situ nanomanipulation/electrical biasing electron microscopy of semiconductor nanowires and 2D materials. He is currently a post-doctoral researcher in Eva Olsson’s group, focusing on high resolution electron microscopy of Josephson junctions, within the Wallenberg Centre for Quantum Technology.

Research Interests:
· In situ electron microscopy
· Semiconductor nanowires
· 2D materials
· Strain engineering
· Josephson junctions

Publications
· Jonatan Holmér, Lunjie Zeng, Thomas Kanne, Peter Krogstrup, Jesper Nygård, Ludvig de Knoop and Eva Olsson, ”An STM – SEM setup for characterizing photon and electron induced effects in single photovoltaic nanowires”, Nano Energy, 53, pp. 175-181 (2018)


· Jonatan Holmér, Lunjie Zeng, Thomas Kanne, Peter Krogstrup, Jesper Nygård and Eva Olsson, “Enhancing the NIR photocurrent in single GaAs nanowires with radial p-i-n junctions by uniaxial strain”, Nano Letters, 21, 21, pp. 9038-9043 (2021)


· Lunjie Zeng, Jonatan Holmér, Rohan Dhall, Christoph Gammer, Andrew M. Minor, and Eva Olsson, “Tuning Hole Mobility of Individual p-Doped GaAs Nanowires by Uniaxial Tensile Stress”, Nano Letters, 21, 9, pp. 3894-3900 (2021)


· Jonatan Holmér, Lunjie Zeng , Eva Olsson, “Optimizing electrical contacts on individual p–i–n GaAs nanowires by site-specific focused ion beam processing”, Nanotechnology, 37, 365702, (2026)