Klaus Stallberg (B6) is awarded dissertation-prize at TU Clausthal

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Congratulations to Dr. Klaus Stallberg, who recently joined project B6 (Höfer/Wallauer) as a postdoc, for being awarded a dissertation-prize.

Congratulations to Dr. Klaus Stallberg, who recently joined project B6 as a postdoc, for being awarded a prize for his excellent dissertation at TU Clausthal on “Spectromicroscopic investigations of thin porphyrin layers and their influence on plasmonic excitations in silver structures by multi-photon-photoemission”.

In his thesis Klaus Stallberg investigated thin porphyrin films and plasmonic silver structures with multi-photon photoemission electronmicroscopy (nP-PEEM). Based on energy-resolved, time-resolved and laterally resolved nPPE experiments he porposed a model for the complex electronic excitation and relaxation processes in porphyrin films and was able to show how a thin porphyrin layer affects the dispersion of plasmons propagating on an extended silver island.

For these investigations he received one of three prizes (Förderpreis 1000 EUR) of the Friends of TU Clausthal (Verein von Freunden der Technischen Universität Clausthal e.V.).

Since July 2017 Klaus Stallberg explores the dynamics of charge transfer processes at interfaces of organic heterostructures by means of time-resolved two-photon photoemission in the framework of project B6 (Höfer/Wallauer).

Link to dissertation on TU Clausthal server.

TU Clausthal press release.

The sublime utility of useless science – Special Colloquium with Prof. Pedro Echenique

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Kick-starting the new funding-period, SFB 1083 proudly welcomes Prof. Dr. Dr. h. c. mult. Pedro M. Echenique from the Donostia International Physics Center in San Sebastián (Spain) and principal investigator in former guest project GP1 of the first funding periode for a special colloquium on “The sublime utility of useless science”.

“The Sublime Utility of Useless Science”

…how science and innovation stand at the center of any successful strategy for the long-term economic development of a country, and how it is even more important and profitable to create an atmosphere for fundamental research rather than to define specific targets…

Professor Echenique is a theoretical physicist at the University of the Basque Country in San Sebastián, Spain, and an external member of SFB 1083 who has continuously engaged himself as a vivid supporter of fundamental science. From 1980 to 1984, he served as a minister for education and culture in the first Basque government elected after the Spanish transition to democracy. In recognition of his fundamental scientific contribution on the interaction of electrons and ions with solids and solid surfaces, Echenique received prestigious prizes, including and the Prince of Asturia Award and the Max Planck Research Prize. In 1999, he founded the Donostia International Physics Center (DIPC), a center of excellence that receives significant funding from private donations. In 2016, his institute received an award by the European Physical Society (EPS), recognizing not only the outstanding contributions of the DIPC in the field of condensed matter physics and materials science, but also for its numerous, successful activities in the outreach and communication of science.

Further information:
Announcement of Professor Echenique’s talk /Ankündigung auf Deutsch
Homepage of the Donostia International Physics Center (DIPC)
Curriculum vitae of Professor Echenique

Johannes Reimann (Project B6) receives Poster-Award at ICFSI-16

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We congratulate Johannes Reimann, PhD-student in the research group of Prof. Höfer, who received a poster-prize for his outstanding presentation at the 16th International Conference on the Formation of Semiconductor Interfaces (ICFSI-16) in Hannover.

In his contribution, Johannes Reimann presented new insights into the generation and control of spin polarized photocurrents in the Dirac Cone of the topological insulator Sb2Te3 by means of time and angle resolved two-photon photoemission (2PPE). The experimental results allow for a better understanding of the fundamental processes governing the electron dynamics inside the topological surface states of this material class.

The work was undertaken within the DFG priority program “Topological Insulators: Materials-Fundamental Properties-Devices” (SPP 1666) and in close collaboration with project B6 of Prof. Höfer.

ICFSI-16 is part of a biannual conference series primarily focused on phenomena at surfaces, interfaces, and nanostructures that are of strong current interest, ranging from characterization at the atomic scale to prospects of applications.

Poster “Optical control of ultrafast currents in the topological surface state of Sb2Te3” by J. Reimann1, K. Kuroda1,2, K. A. Kokh3, O. E. Tereshchenko3, A. Kimura4, J. Güdde1, U. Höfer1 (1 Philipps-Universität-Marburg, 2 University of Tokyo, 3 Russian Academy of Sciences and Novosibirsk State University, 4 Hiroshima University) – 16th International Conference on the Formation of Semiconductor Interfaces (ICFSI-16) July 02 – 07, 2017, Hannover, Germany.