Green exciton series in cuprous oxide
| Autor: | Patric Rommel, Patrik Zielinski, Jörg Main |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics Series (mathematics) Exciton Continuum (design consultancy) Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Hermitian matrix Molecular physics Quantum defect symbols.namesake Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Principal quantum number Rydberg formula symbols 010306 general physics 0210 nano-technology Eigenvalues and eigenvectors |
| Zdroj: | Physical Review B. 101 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.101.075208 |
| Popis: | We numerically investigate the odd parity states of the green exciton series in cuprous oxide. Taking into account the coupling to the yellow series and especially to the yellow continuum, the green excitons are quasi-bound resonances with a finite lifetime which cannot be described with Hermitian operators. To calculate their positions and linewidths, we use the method of complex-coordinate rotation, leading to a non-Hermitian complex eigenvalue problem. We find that the behavior of the dominant P states is very well approximated by a modified Rydberg formula using a negative quantum defect. The corresponding linewidths induced by the coupling to the yellow continuum decrease with the third power of the principal quantum number. 8 pages, 4 figures including Supplemental Material |
| Databáze: | OpenAIRE |
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