Manfred Bayer coauthored the 2014 observation of Rydberg excitons in cuprous oxide. The electron-hole bound states reached principal quantum numbers up to 25, with spatial extents measured on micrometre scales. Their large size strengthens interactions between excitations, and the experiment found evidence that one excitation suppresses creation of another nearby. The result brings highly excited atomic-like states and collective optical effects into a solid.[ref]
Giant Rydberg Excitons in Cuprous Oxide by Tomasz Kazimierczuk and others. Nature Materials 13 (2014), abstract: high principal quantum numbers, size and blockade
Portrait of Manfred Bayer
. Benito Barajas / TU Dortmund. External portrait hosted by TU Dortmund University. Source.
Manfred Bayer is a German chemist known for his work in the field of polymer science and organic chemistry. He is particularly recognized for his contributions to the development of polyurethanes and other synthetic materials. Bayer AG, the company he co-founded, is a global enterprise with interests in pharmaceuticals, healthcare, and agriculture.
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