Guests and Visitors

30.01.2018 – Visit of Babak Seradjeh

We welcome today's guest, Babak Seradjeh, from Indiana University, who is an expert in topological insulators and superconductors, Majorana fermions in condensed matter systems, and realization and manipulation of fractional particles.
He will be discussing Universal fluctuations of Floquet topological invariants at low frequencies.  Please join us to hear about the newest development in this hot topic.

12.12.2017 – Visit to the University of Twente

Kriti, Jairo and Paul in a transport meeting.
Seminar of Jairo Sinova in Twente the 12.12.2017

Prof. Jairo Sinova and Bertrand Dupé are visiting the group of Prof. Paul Kelly at the University of Twente for a couple of days. It is a pleasure to visit the group of Prof. Kelly and benefit from his long experience in spin transport calculations from ab initio.

 

05.12.2017 – Visit of Bernd Zimmermann

This week, we are very pleased to host Dr. Bernd Zimmernann from the group of Prof. Yuriy Mokrousov from Forschungszentrum Jülich. He will teach us about spin-orbit effects from ab-initio theory.

07.11.2017 – Visit of Dr. Oliver Breunig

We welcome today Dr. Oliver Breunig from the Institute of Physics II at the University of Cologne, hosted by TWIST. He will give a talk on “Gigantic Negative Magnetoresistance in a Disordered Topological Insulator”.

Details: “Recently the phenomenon of negative magnetoresistance (MR) is attracting renewed interest due to its occurrence in Weyl semimetals because of the chiral anomaly. In other systems a large MR typically relates to magnetism. In this talk a novel mechanism leading to a large negative MR will be presented that is based not on magnetism, but on disorder. In the newly synthesized bulkinsulating topological insulator material T1BixSb1-xTe2 we find a suppression of the resistivity by up to 98 % in 14 T at low temperature. From transport data and numerical simulations, this gigantic negative MR is understood by a percolation of charge puddles formed in the disordered bulk.”

Click here to see the announcement.

01.07.2017 – Two-month stay of guest scientist Joo-Von Kim

Joo-Von Kim from the Centre for Nanoscience and Nanotechnology/CNRS/Université Paris-Sud in Orsay arrived for his two-month stay as a guest scientist in the INSPIRE group. He will use his expertise in micromagnetic simulations to work with Bertrand Dupé on the coupled motion of (anti)skyrmion pairs in magnetic ultrathin films ("Skyrmion Tango"). His stay is financially supported by the DAAD.