Dr. Erik Kampert, HLD Dresden, Germany
At the end of my PhD-research in the High Field Magnet Laboratory in Nijmegen in 2010, Professor Wosnitza and I met during one of the EuroMagNET-meetings. It appeared that there was a vacancy for a postdoc in his lab, which needed to be filled urgently. It was a position that would involve much local contact work, assisting users of the pulsed field facility in Dresden during their experiments. Having performed magnetization and transport measurements in magnetic fields up to 33T already, and having obtained some minor experience in the former pulsed magnetic fields in Nijmegen, it was an interesting opportunity for continuing some of my previous research in magnetic fields up to 70T and bringing some frequent HFML-users in contact with pulsed magnetic fields. Moreover, it would offer further possibilities to broaden my knowledge on condensed matter physics and on the related available experimental techniques.
As a natural science student, and having a PhD on multidisciplinary work in-between the HFML and the organic chemistry department at the Radboud University in Nijmegen, it was a big step to go to a lab that specializes on superconductivity and highly correlated materials. Being used to magnetic molecules and soft matter research, I was then introduced into the research field involving cooper pairs and heavy fermions. The only overlap I had with my previous research was the measurement of quantum oscillations in new materials, both in their magnetic and electronic properties.
Although I have started my postdoc work in the HLD with performing magnetization measurements, I soon was involved in pulsed field transport measurements, on which I currently still focus all of my attention and time. During the years I have worked in the HLD, it got more and more challenging to measure high-resolution resistance on ever-smaller samples, having ever-smaller resistivities. Furthermore, these measurements are preferably combined with very low-temperatures and in-situ angle changes, in magnets with bores down to 10mm, which combination is even more challenging to achieve.
I enjoy the contact with the frequent users of the HLD and the progress we make in their specific research. Moreover, I enjoy the advances we make in the development of new measurement setups in pulsed magnetic fields and the improvement of existing ones. From time to time I am surprised again about the high-resolution data we can actually obtain in our pulsed field measurements. Finally, we are currently developing a setup for measuring the change of magnetic properties in a wide range of compounds under optical excitation with visible light, which will hopefully be a successful realization of an old plan of Professor Peter Christianen, and could make a link to my previous work again.