Polaronic excitons inZnxCd1−xSe/ZnSequantum wells
| Autor: | Fabio Beltram, Raffaele Colombelli, Alfonso Franciosi, K. K. Bajaj, Vittorio Pellegrini, Lia Vanzetti, Andrea De Nardis, I. N. Krivorotov |
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| Rok vydání: | 2000 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Condensed matter physics Condensed Matter::Other Exciton Continuum (design consultancy) Heterojunction Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter::Materials Science Exciton binding energy Perpendicular magnetic field Absorption (electromagnetic radiation) Quantum well Biexciton |
| Zdroj: | Physical Review B. 61:1700-1703 |
| ISSN: | 1095-3795 0163-1829 |
| DOI: | 10.1103/physrevb.61.1700 |
| Popis: | We present a detailed investigation of excitonic absorption in $Zn_{0.69}Cd_{0.31}Se/ZnSe$ quantum wells under the application of a perpendicular magnetic field. The large energy separation between heavy- and light-hole excitons allows us to clearly resolve and identify magneto-excitonic absorption resonant with the continuum edge of the 1S heavy-hole exciton. Experimental values of the exciton binding energy are compared with results of a theoretical model that includes the exciton-phonon interaction. The remarkable agreemeent found unambiguously indicates the predominant polaronic character of excitons in ZnSe-based heterostructures. |
| Databáze: | OpenAIRE |
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