Johannes Kepler University

The Johannes Kepler University (JKU) Linz – Austria is, with its four faculties, the major education and research centre in Upper Austria. According to the Times Higher Education Ranking “100 under 50”, JKU is listed among the best world-wide 100 Universities under 50 years old.

The Institute for Semiconductor and Solid State Physics (HFP), belonging to the Faculty of Engineering and Natural sciences, is an internationally recognized center focusing on the growth, advanced characterization and processing of semiconductors. Two research groups, headed by Alberta Bonanni and by Armando Rastelli contribute to the ALMA project by bringing in complementary expertise and tools for experimental validation of the theoretical results.

Contributors to ALMA

Group of Alberta Bonanni

After her graduation in physics at the University of Trieste – Italy, Alberta Bonanni moved to the University of Minnesota USA, where her main research focus was on the epitaxial growth and synchrotron radiation-based characterization of II-VI and III-V semiconductors heterostructures. At the Johannes Kepler University of Linz – Austria, where she obtained the venia docendi in 2008, she organized and is leading the only Austrian academic laboratory and group specializing in the epitaxial growth and advanced characterization of III-nitride semiconductors. Her principal research interests are currently oriented towards the fabrication, beyond state-of-the-art characterization and demonstration of novel functionalities of (magnetic) III-nitride low-dimensional structures. Through European Networks, an European Research Council grant, long-term cooperations with large European facilities and a number of projects supported by the Austrian Science Foundation, she has been developing a commitment to internationality, collaboration and promotion of science.

People involved in the ALMA project:

Dmytro Kysylychyn (PhD student): optical characterization of nitride-based semiconductors and modelling

Rajdeep Adhikari (senior PostDoc): MOVPE growth, structural and electrical characterization of multilayers based on Ga(In,Al)N

Group of Armando Rastelli

Prof. Rastelli obtained his PhD at the University of Pavia in 2003. From 2000-2002 he was at the ETH of Zürich, where he worked on the epitaxial growth and surface characterization of SiGe nanostructures. In 2002 he was as a Marie-Curie fellow at the TU Tampere, Finland, where he got acquainted with III-V epitaxy by MBE. From 2003-2007 he was PostDoc at the Max-Planck-Institute in Stuttgart, where he worked both on SiGe and III-V quantum dots. From 2007-2012 he headed the “QD department” at the IFW Dresden and in 2012 he was appointed as Professor of Semiconductor Physics at HFP-JKU. His main research interests are: (1) the deterministic control of the physical properties of single nanostructures via mechanical deformation and, (2) the investigation of thermal transport through nanostructured materials. Prof. Rastelli is coauthor of more than 180 publications in international journals (with an ISI h-index of 41), has given about 70 invited talks, and, among others, has organized 3 workshops/conference sessions focused on thermoelectric transport.

People involved in the ALMA project:

Lukas Nausner (PhD student): thermal transport characterization via differential 3-omega method

Dr. Yongheng Huo (senior PostDoc): MBE growth and structural characterization of multilayers based on Ga(Al,In)As