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The Chemistry of Quantum Materials

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Event type:
  • Colloquium
lecture hall with a lot of students © Jürgen Huhn​/​TU Dortmund
Prof. Dr. Leslie M. Schoop

The Chemistry of Quantum Materials

As chemists, we are familiar with guidelines and heuristics that help us to predict how
chemical reactions will proceed. My group is interested to expand these heuristics to
understand if we can predict topological materials, which is a class of quantum matter.
In this talk, I will show that delocalized chemical bonds in certain structural networks
allow us to define chemical descriptors that predict topological material. Using these
descriptors, we found a layered, antiferromagnetic van der Waals material with very
high mobility. This is the first time that these properties are combined in one material,
which is promising for applications in novel types of data storage or computing devices.
We further implemented our heuristics to discover novel complex topological phases,
including magnetic ones, and phases that are in competition with complex structural
distortions. I will show how structural distortions can have a positive effect on
topological band structures.
I will also briefly discuss the concept of chemical exfoliation for the synthesis of novel
2D quantum materials. With this method, we can exfoliate materials for which the scotch
tape method fails. I will show how we were able to synthesize a new chromium
chalcogenide this way, which might be a new 2D magnetic material.

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Location & approach

The campus of the Technical University of Dortmund is located near the freeway junction Dortmund West, where the Sauerland line A45 crosses the Ruhr expressway B1/A40. The Dortmund-Eichlinghofen exit on the A45 leads to the South Campus, the Dortmund-Dorstfeld exit on the A40 leads to the North Campus. The university is signposted at both exits.

The "Dortmund Universität" S-Bahn station is located directly on the North Campus. From there, the S-Bahn line S1 runs every 20 or 30 minutes to Dortmund main station and in the opposite direction to Düsseldorf main station via Bochum, Essen and Duisburg. In addition, the university can be reached by bus lines 445, 447 and 462. Timetable information can be found on the homepage of the Rhine-Ruhr transport association, and DSW21 also offer an interactive route network map.

 

 

One of the landmarks of the TU Dortmund is the H-Bahn. Line 1 runs every 10 minutes between Dortmund Eichlinghofen and the Technology Center via Campus South and Dortmund University S, while Line 2 commutes every 5 minutes between Campus North and Campus South. It covers this distance in two minutes.

 

 

From Dortmund Airport, it takes just over 20 minutes to get to Dortmund Central Station by AirportExpress and from there to the university by S-Bahn. A wider range of international flight connections is offered by Düsseldorf Airport, about 60 kilometers away, which can be reached directly by S-Bahn from the university's train station.

Interactive map

The facilities of TU Dortmund University are spread over two campuses, the larger Campus North and the smaller Campus South. Additionally, some areas of the university are located in the adjacent "Technologiepark".

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