Giant Rydberg excitons in the copper oxide Cu2O

T. Kazimierczuk, D. Fröhlich (), S. Scheel, H. Stolz and M. Bayer
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T. Kazimierczuk: Experimentelle Physik 2, Technische Universität Dortmund, D-44221 Dortmund, Germany
D. Fröhlich: Experimentelle Physik 2, Technische Universität Dortmund, D-44221 Dortmund, Germany
S. Scheel: Institut für Physik, Universität Rostock, D-18051 Rostock, Germany
H. Stolz: Institut für Physik, Universität Rostock, D-18051 Rostock, Germany
M. Bayer: Experimentelle Physik 2, Technische Universität Dortmund, D-44221 Dortmund, Germany

Nature, 2014, vol. 514, issue 7522, 343-347

Abstract: Rydberg excitons (condensed-matter analogues of hydrogen atoms) are shown to exist in single-crystal copper oxide with principal quantum numbers as large as n = 25 and giant wavefunctions with extensions of around two micrometres; this has implications for research in condensed-matter optics.

Date: 2014
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DOI: 10.1038/nature13832

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