Microwave-enhanced exciton delocalisation in low-dimensional CdTe/CdMnTe and CdMnTe/CdMgTe quantum well structures

• Autorzy: Godlewski, M. , Ivanov, V. Yu. , Khachapuridze, A.
• Języki publikacji: EN

Abstrakty

EN

In this work we descrjbe new application of the technique of optically detected cyclotron resonance (ODCR) to the studies of localisation processes in quantum well structures of CdTe/CdMnTe and CdMnTe/CdMgrre. Interaction between rnicrowave-eated free carriers, at cyclotron. resonance conditions, and either site- or impurity-localised excitons results in modificatjon of photoluminescence from the sample. In consequence, cyclotron resonance of free carriers can be detected optically. We show here that the tech-nique of ODCR allows us to monitor processes of carrier/exciton localisation and also to evaluate their influence on radiative recombination processes in quantum well structures. We conclude that localisation effects are crucial to explain operation of CdTe/CdMnTe and CdMnTe/CdMgTe structures as light modulators.

Słowa kluczowe

PL

rezonans cyklotronowy; detekcja optyczna; nośnik; półprzewodnik; struktura kwantowa; ekscyton

EN

cyclotron resonance; optical detection; hot carriers; semiconductor; quantum well structure; exciton

• Czasopismo: Bulletin of the Polish Academy of Sciences. Chemistry
• Rocznik: 2000
• Tom: Vol. 48, No. 4
• Strony: 346-354
• Opis fizyczny: Bibliogr. 10 poz.

Twórcy

autor

Godlewski, M.

autor

Ivanov, V. Yu.

autor

Khachapuridze, A.

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland,