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Physikalisches Kolloquium: Prof. Dr. Thomas A. Jung – Programming electronic and spin states in 2D supramolecular architectures by modifications on the single atomic or molecular level

23.09.2022 | 14:15
Prof. Dr. Thomas Jung

Prof. Dr. Thomas Jung

Supramolecular Architectures

Supramolecular Architectures

Professor Jung wird über die Arbeit seiner Forschungsgruppe "Molekulare Nanowissenschaft" am Paul Scherrer Institut und „Nanolab“ an der Universität Basel berichten. In den Laboren werden oberflächengestützte atomare und molekulare Systeme entwickelt, die spezifische elektronische oder Spin-Zustände aufweisen und adressierbar sind.

Future quantum technologies rely on the understanding of the interaction between different electronic states in atoms or molecules. Surface supported atomic and molecular systems provide a base for such investigations with the particular advantage of addressability. In our work we establish on-surface architectures which exhibit specific electronic or spin states originating from the reduced dimensionality of the self-assembled and atomically precise architectures.

Quantum well arrays, exhibiting band-like electronic states for example, can be produced by the interaction of porous on-surface networks with 2D Shockley-type surface states. These quantum wells have been modified by the adsorption / condensation of Xe atoms. By designing the Xe filling pattern in the array, a quantum breadboard can be realized in remembrance of the breadboards used for testing electronic circuitry.

2D ‘checkerboard’ architectures of magnetic molecules containing different e.g. Fe, Mn spins, exhibit particular magnetic properties and serve as templates for the modification of spins by e.g. ligands. On magnetic substrates their spin state is strongly determined by the substrate and can be selectively switched by ligation to e.g. NH3. On non-magnetic Au(111), we have observed the first example of 2D ferrimagnetic long-range order and remanence due to the RKKY interaction mediated by the surface states of the support.

Self-assembled 2D architectures contribute to our understanding of fundamental interactions involved in confinements and in low dimensional systems.


Zeit & Ort

23.09.2022 | 14:15

Hörsaal A (Raum 1.3.14)
Fachbereich Physik
Arnimallee 14
14195 Berlin

Weitere Informationen

Gastgeberin: Prof. Dr. Katharina Franke


  • Nanolab
  • Nanophysik
  • Nanotechnologie
  • Oberflächenphysik
  • Paul Scherer Institut
  • Physikkolloquium
  • Thomas Jung
  • Universität Basel