Subgroup
Dr. Marcus Wyss
Dr. Marcus Wyss started as a Ph.D. student in April of 2014 after completing a Masters degree in the group of Prof. Laura Heyderman under supervision of Prof. Frithjof Nolting, both at the Paul Scherrer Institute (PSI). He pursued a number of nano-magnetic imaging projects including x-ray magnetic circular dichroism photoemission electron microscopy (XMCD-PEEM) experiments at PSI and scanning SQUID microscopy (SSM) experiments in the Poggio lab. He later used both XMCD-PEEM and SSM to study ferromagnetic nanotubes and SSM to study artificial spin ice. He graduated in November 2018 and started working as a post-doc in the Poggio lab and on a new design for SQUID-on-tip sensors for the next generation of SSM, which confirmed the general feasibility and paving the way for the FIBsuperProbes project. In June 2021, Marcus moved to the Nano Imaging Lab at the Swiss Nanoscience Institute (SNI) and works there as a microscopy expert. He will continue to be involved in the FIBsuperProbes project as a research assistant.
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Dr. Kousik Bagani
Dr. Kousik Bagani earned his Bachelor of Science in Physics in 2008 from Panskura Banamali College at Vidyasagar University and his Masters of Science in Physics in 2010 from Jadavpur University, both in India. In 2016, he received his Ph.D. in Physics from the Saha Institute of Nuclear Physics at Calcutta University. There he wrote a thesis on “Role of Defects in Anomalous Change of Physical Properties in Graphitic and Oxide Nano-Materials” under the supervision of Prof. Sangam Banerjee. From 2017 to 2020, he worked as a post-doctoral researcher at the Weizmann Institute in Israel in the group of Prof. Eli Zeldov on developing the a new generation of nanometer-scale SQUID-on-tip sensors. He is responsible for the administration concerning the project.
Daniel Jetter
Daniel Jetter received his Bachelor of Science in Physics in 2019 from the University of Tübingen. In January 2020, he joined the Poggio lab as a visiting Masters student, under the external supervision of Prof. Reinhold Kleiner at the University of Tübingen. He worked on the development of a nanometer-scale SQUID-on-cantilever probe for sensitive magnetic imaging. In January 2021, he obtained his Masters degree in Physics,from the University of Tübingen. Daniel then joined the Poggio lab as a Ph.D. student in January 2021.
Dr. Boris Gross
Dr. Boris Groß received his Diplom in Physics in 2009 from the University of Tübingen. In 2013 he completed his Ph.D. in Physics, also at the University of Tübingen, under the supervision of Prof. Dr. Reinhold Kleiner. There he focused his research on the generation of terahertz radiation using Josephson junctions. In particular, he studied the occurrence of this radiation and connected processes in the intrinsic stacks of Josephson junctions forming within the high-transition superconductor Bi2Sr2CaCu2O8+δ. Boris joined the Poggio lab in September 2014.
Dr. César Magén
Dr. César Magén defended his PhD in Physics in 2005 at the University of Zaragoza, awarded with the Extraordinary Doctorate Prize of UNIZAR for academic year 2005-06. Since 2006 his research activities have focused on the nanocharacterization of functional nanomaterials by advanced aberration corrected (S)TEM techniques. He was postdoctoral fellow at the CEMES-CNRS (Toulouse, France, 2006-07), later in the Oak Ridge National Laboratory (Tennessee, USA, 2007-08). In 2008 he was awarded an ARAID Fellowship to lead a new research line on aberration corrected TEM at the Instituto de Nanociencia de Aragón (INA) of the University of Zaragoza. He has been scientific staff of the Laboratorio de Microscopías Avanzadas (LMA) since its foundation, supervising the installation and setup of the first aberration corrected TEM in Spain (2009) and Coordinator of the TEM Area of the LMA node of the ICTS-ELECMI in 2016-2017. Since 2014 he is Associated Professor of the Condensed Matter Physics Department at University of Zaragoza. In June 2017, he became Staff Researcher of the Institute of Materials Science of Aragon (CSIC-University of Zaragoza, Spain) in the NANOMIDAS group led by Prof. De Teresa. Nowadays his research interests range from the quantitative local characterization of nanoscale ferromagnets, to pioneering the application by electron holography techniques for in situ quantitative magnetometry in Spain, to the development of novel functional complex multiferroic oxides by the application of different advanced aberration corrected STEM imaging and spectroscopy. Dr. Magén has co-authored of about 180 publications in international peer reviewed journals, and participated in 31 national and international research projects (principal investigator of 10). He has given more than 30 invited talks at conferences as well as participated in numerous workshops and schools on electron microscopy.
Dr. Soraya Sangiao
Dr. Soraya Sangiao (F) defended her PhD in 2012 from the University of Zaragoza for studies on electronic transport properties and magnetization dynamics properties of nanostructures. After two years as Marie Curie postdoctoral fellow in CEA-Saclay (France) working on spin pumping experiments on nanostructures, she joined the Institute of Nanoscience of Aragon as a postdoctoral researcher in 2014. From September 2017, she is Assistant Professor at the Department of Condensed Matter Physics of the University of Zaragoza. Her current research interests are the fabrication of nanostructures by Electron Beam Lithography, Focused Ion Beam and Focused Beam Induced Deposition and the study of the interplay between magnetic properties at high frequency, electronic transport and spintronic properties in nanostructures.
Fabian Sigloch
Fabian Sigloch received a Master’s degree in Physics in 2020 with a major in Solid-State- and Nano-Physics from the Karlsruhe Institute of Technology (KIT) in Germany. In late 2020 he started a PhD position under the supervision of Prof. J. M. De Teresa.
His investigations are focused on the creation of a tungsten-based SQUID nanofabricated by means of Focused Ion Beam Induced Deposition on top of an AFM tip.
Katja Wurster
Katja Wurster received her Bachelor of Science in Physics in 2017 and her Master of Science in Physics in 2019 from the University of Tübingen. She joined the Koelle/Kleiner lab as a student assistant in 2015, working on electron beam lithography and Ga FIB milling, and she continued with her Bachelor and Master thesis, devoted to the development of YBCO and Nb nanoSQUIDs for SQUID microscopy. In May 2019, Katja started her PhD thesis. In the FIBsuperProbes project, she is working on the development of YBCO devices that shall be integrated on IBM cantilevers.
Max Karrer
Max Karrer received his Bachelor of Science in Physics in 2017 and his Master of Science in Physics in 2018 from the University of Tübingen. After his Bachelor thesis work on theoretical statistical physics with Prof. Roland Roth, he joined the Koelle/Kleiner lab in 2017 for his Master thesis, devoted to the realization of Josephson junctions with a focused He ion beam and characterization of their electric transport properties. In August 2018, Max started his PhD thesis. In the FIBsuperProbes project, he is working on the development of nanopatterning and nanomodification techniques using a He ion microscope, with focus on YBCO devices.
Timur Griener
Timur Griener received his Bachelor of Science in Physics in 2019 and his Master of Science in Physics in 2020 from the University of Tübingen. He joined the Koelle/Kleiner lab in 2018 for his Bachelor and Master thesis, devoted to the fabrication and characterization of Josephson junctions and nanoSQUIDs based on Dayem bridges in Nb thin film structures with focused Ga, Ne and He ion beams. Timur started his PhD thesis in October 2020. In the FIBsuperProbes project, he is working on nanopatterning and ion-beam-induced growth of metallic superconductors using a He/Ne ion microscope.
Ute Drechsler
Ute Drechsler is the engineer responsible for fabricating cantilevers for the thermal scanning probe lithography tool. She learned process engineer at IBM in the IBM facility in Böblingen for multi-ceramic substrates. She moved to IBM Research-Zurich in 1996 and is since then responsible for the process engineering in the Science and Technology department. She has experience in MEMS fabrication, OLED fabrication, micro-fluidic chip fabrication, etc. She has developed the current cantilever fabrication process during the last 20 years. She has 45 patents.