Charged Exciton Dissociation Energy in (Cd,Mn)Te Quantum Wells with Variable Disorder and Carrier Density

• DOI: 10.1007/s11664-020-08181-z
• Publication Date: 2020-05-23T20:02:19Z
• Authors: A. Łopion; A. Bogucki; K. E. Połczyńska; W. Pacuski; A. Golnik; T. Kazimierczuk; P. Kossacki
• Keywords: 0103 physical sciences; 01 natural sciences

Abstract We report on the magneto-photoluminescence of (Cd,Mn)Te/(Cd,Mg)Te quantum wells excited by photons with varied energy. observe that laser illumination modifies carrier density and Coulomb disorder in wells. Three different regimes are analyzed, corresponding to low hole disorder, significant high density. By using diluted magnetic semiconductor as a well material, we can induce spin singlet–triplet transition charged excitons field. This is then used tool determine exciton dissociation With this approach, find same value for energy all disorder. Our result compared obtained from PL splitting between X $$^{\!\! +}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mrow> <mml:mspace <mml:mo>+</mml:mo> </mml:mrow> </mml:msup> </mml:math> lines at zero field, which exhibits significantly greater variation.