Magnetic CdSe-based quantum dots grown on Mn-passivated ZnSe

Applied Physics Letters

Volumn 80, Issue 7, 2002, Pages 1237-1239

  Titova, L V ^a   Furdyna, J K ^a   Dobrowolska, M ^a   Lee, S ^b   Topuria, T ^c   Moeck, P ^c   Browning, N D ^c  

^a UNIVERSITY OF NOTRE DAME   (United States)

^b Korea University   (South Korea)

^c UNIVERSITY OF ILLINOIS AT CHICAGO   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CDSE QUANTUM DOTS; GROWTH METHOD; MN PASSIVATION; PASSIVATION PROCESS; POLARIZATION EFFECT; SELF-ASSEMBLED; SIZE UNIFORMITY; ZEEMAN SPLITTINGS;

CADMIUM ALLOYS; CADMIUM COMPOUNDS; PASSIVATION; SEMICONDUCTOR QUANTUM DOTS;

MANGANESE;

EID: 79956013139     PISSN: 00036951     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1450254     Document Type: Article

References (16)

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13. It is interesting to note that, as indicated in earlier reports, when the ZnSe surface is exposed to Be prior to deposition of CdSe submonolayers (0.4 ML), the Be sites also act as nucleation centers for CdSe islanding [see, for example, J. Seufert et al., Phys. Rev. B 62, 12609 (2000)
14. and M. Keim et al., J. Appl. Phys. 88, 7051 (2000)]. jap JAPIAU 0021-8979
15. The reader will note that the Zeeman-induced redshift observed in this system is atypical, i.e., it does not exhibit the usual saturation as the magnetic field increases. This is caused by the formation of exciton magnetic polarons (EMPs) in the magnetic QDs. The EMP can reduce the exciton energy by 15 meV or more [see, e.g., G. Bacher et al., Appl. Phys. Lett. 79, 524 (2001)]. apl APPLAB 0003-6951
16. When the magnetic field is applied, the EMP effect is gradually eliminated [see, e.g., G. Mackh et al., Phys. Rev. B 49, 10248 (1994)]. The magnetic field dependence of the Zeeman shift seen in our samples represents the (competing) effects of the Zeeman shift of the band edges and gradual "evaporation" of the EMP effect caused by the field. prb PRBMDO 0163-1829