MBE growth and optical properties of self-organized dots of CdTe and (Cd,Mn)Te

Kuroda, Shinji; Itoh, Naohiro; Terai, Yoshikazu; Takita, K.; Okuno, Tsuyoshi; Nomura, Mitsuhiro; Masumoto, Yasuaki

doi:10.1016/j.jallcom.2003.05.004

Cited by 4 publications

(2 citation statements)

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“…Very few magnetophotoluminescence excitation ͑MPLE͒ studies can be found in the literature. [17][18][19][20][21] Only one was performed on a sample with well-resolved excited-state emission but that study observed only the p-shell absorption, and it was limited to 14 T. 17 Here, we present MPLE results up to 28 T, where p-and d-shell absorption as well as a number of weaker "indirect" transitions are observed. Experimental spectra are compared to detailed theoretical modeling, and all the transitions observed in the spectra are reproduced by our model, including their magnetic-field dependence, which allows their unambiguous assignment.…”

Section: Introductionmentioning

confidence: 97%

Single-exciton energy shell structure in InAs/GaAs quantum dots

et al. 2008

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Access and use of this website and the material on it are subject to the Terms and Conditions set forth at Single-exciton energy shell structure in InAs/GaAs quantum dots Awirothananon, S.; Raymond, S.; Studenikin, S.; Vachon, M.; Render, W.; Sachrajda, A.; Wu, X.; Babinski, A.; Potemski, M.; Fafard, S.; Cheng, S.J.; Korkusinski, M.; Hawrylak, P.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=fr L'accès à ce site Web et l'utilisation de son contenu sont assujettis aux conditions présentées dans le site LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D'UTILISER CE SITE WEB. NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=21274614&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=21274614&lang=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.1103/PhysRevB.78.235313 Physical Review B -Condensed Matter and Materials Physics, 78, 23, 2008Single-exciton energy shell structure in InAs/GaAs quantum dots The energy shell structure of a single exciton confined in a self-assembled quantum dot ͑QD͒, including excited states, is studied in a regime where the direct Coulomb attraction energy is comparable to the kinetic energy of the carriers. This is achieved via magnetophotoluminescence excitation spectroscopy experiments, where a magnetic field applied perpendicular to the plane of the QD is used to reveal the angular-momentum content of energy shells. The absorption spectrum of the QDs is modeled, and comparison with experiment allows us to relate the observed transitions to interband QD bound-state transitions. The blueshift of the absorption peaks compared to the emission peaks is then interpreted in terms of many-body interactions, and we show that for a highly symmetric situation, the observed energy difference gives a direct measurement of the extra exchange energy gained upo...

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Section: Introductionmentioning

confidence: 97%

Single-exciton energy shell structure in InAs/GaAs quantum dots

et al. 2008

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“…Therefore, such parameters as the number of magnetic impurities, their positions and the average concentration inside the dots govern the magnetic properties of these structures. In the most reports concerning diluted magnetic QDs the number of magnetic inside the dots is of the order of several hundred [1,2,[9][10][11][12]. There are, however, a few publications about a single magnetic ion inside a QD [13,14], which has been inserted into the dot by using diffusion from a remote diluted magnetic layer [15].…”

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Growth and micro‐luminescence from diluted magnetic quantum dots

Wojnar

Karczewski

Suffczyński

et al. 2011

Phys. Status Solidi C

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CdTe quantum dots containing magnetic Mn‐ions are grown by molecular beam epitaxy. The Mn content is varied by changing the growth conditions from about 3% to 0.04%. The presence of the magnetic impurities inside the quantum dots results in the giant Zeeman splitting of excitonic levels. Direct insight into magnetic properties of these structures is obtained by the micro‐photoluminescence at an external magnetic field. A careful analysis of the spectral position, the shape and the polarization of emission lines from individual quantum dots reveals a paramagnetic character of Mn ions and provides with a tool to obtain information about the average Mn concentration and the approximate number of Mn‐ions inside dots. Quantum dots with the number of Mn ions of the order of 100 are found in the sample with Mn content of 3% and with only 1 or 0 Mn ions in the sample with 0.04% (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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