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Free Carriers Heating at Mn^{2+} Magnetic Resonance in CdMnTe

100%

Godlewski M., Gałązka R., Tsimperidis I., Gregorkiewicz T., Ammerlaan C.

Acta Physica Polonica A

1995

vol. 87

issue 1

177-180

The results of optically detected magnetic and cyclotron resonance experiments performed on Cd_{1-x}Mn_{x}Te (x = 0.007) are presented. It is shown that the Mn^{2+} magnetic resonance results in heating of free holes, which can be observed via the effects of hot holes on the CdMnTe "edge" emission.

Optically Detected Cyclotron Resonance Studies of High Eelectron Mobility AlGaAs/GaAs Structures

73%

Godlewski M., Monemar B., Anderson T. G., Tsimperidis I., Gregorkiewicz T., Ammerlaan C. A. J., Muszalski J., Kaniewska M.

Acta Physica Polonica A

1995

vol. 88

issue 5

990-994

Optically detected cyclotron resonance is used for the identification of recombination transitions of two-dimensional electron gas in A1GaAs/GaAs heterostructures. Two photoluminescence emissions are attributed to the recombination of the two-dimensional electron gas. These are the so-called H-band and the Fermi level singularity photoluminescence. Optical detection of cyclotron resonance is related to the change of the band bending across the GaAs active layer and the AlGaAs barrier, which is caused by impact ionization of shallow donors in the barrier region. Influence of a long range carrier scattering on ionized impurities on a mobility of the two-dimensional carriers is studied.

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2 Acta Physica Polonica A

2 1995

2 Godlewski M.

2 Gregorkiewicz T.

2 Tsimperidis I.

1 Ammerlaan C.

1 Ammerlaan C. A. J.

1 Anderson T. G.

1 Gałązka R.

1 Kaniewska M.

1 Monemar B.

1 Muszalski J.

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Free Carriers Heating at Mn^{2+} Magnetic Resonance in CdMnTe

Optically Detected Cyclotron Resonance Studies of High Eelectron Mobility AlGaAs/GaAs Structures