AG Wende in Applied Chemistry Detection of Spin Crossover in Cobalt Complexes


In a collaboration led by Richard Berndt (CAU Kiel) and CENIDE member Manuel Gruber (Uni DUE), scanning tunneling microscopy was used to detect spin crossovers in complex cobalt tetramers on a silver surface.

So-called spin crossover (SCO) molecules are promising candidates for the future of data storage. They have a much higher data density than is feasible today, with a large fraction of the currently known complexes being based on iron so far. The contribution of the working group (AG) Wende was the element-specific analysis of the complexes by photoemission spectroscopy.

Figure: Current-voltage curves (a) of the molecules in the ground state L (b) and the excited state H (c).

Original publication: S. Johannsen, S. Ossinger, J. Grunwald, A. Herman, H. Wende, F. Tuczek, M. Gruber, and R. Berndt, Angew. Chem. Int. Ed. (accepted January 2022), https://doi.org/10.1002/anie.202115892