Optical transitions in AlGaAs/GaAs quantum wires on GaAs(6 3 1) substrates studied by photoreflectance spectroscopy

E. Cruz-Hernández; J. Hernández-Rosas; J. S. Rojas-Ramírez; R. Contreras-Guerrero; R. Méndez-Camacho; C. Meja-García; V. H. Mndez-Garca; M. Lopéz-Lopéz

doi:10.1016/j.physe.2010.03.019

Optical transitions in AlGaAs/GaAs quantum wires on GaAs(6 3 1) substrates studied by photoreflectance spectroscopy

E. Cruz-Hernández, J. Hernández-Rosas, J. S. Rojas-Ramírez, R. Contreras-Guerrero, R. Méndez-Camacho, C. Meja-García, V. H. Mndez-Garca, M. Lopéz-Lopéz

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

We present the synthesis and characterization of a system of self-assembling GaAs quantum wires (QWRs) embedded in Al_x Ga _1-x As barriers grown by molecular beam epitaxy on GaAs(6 3 1)-oriented substrates. We studied the optical transitions in the QWRs as a function of temperature (T) by photoreflectance (PR) spectroscopy. The energy transitions were extracted from the PR spectra employing the third-derivative functional form, and they were compared with the transitions theoretically calculated from both, a model of QWRs with cylindrical geometry and a model of a conventional square quantum well. The results show a good agreement between experimental and theoretical data in the case of the QWR model, and from this comparison we were able to identify up to 12 different transitions in the PR spectra and to study their behavior dependent on temperature.

Original language	English
Pages (from-to)	2571-2574
Number of pages	4
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	42
Issue number	10
DOIs	https://doi.org/10.1016/j.physe.2010.03.019
State	Published - Sep 2010
Externally published	Yes

Keywords

MBE
Optical transitions
Photoreflectance
Quantum wires

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10.1016/j.physe.2010.03.019

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Cruz-Hernández, E., Hernández-Rosas, J., Rojas-Ramírez, J. S., Contreras-Guerrero, R., Méndez-Camacho, R., Meja-García, C., Mndez-Garca, V. H., & Lopéz-Lopéz, M. (2010). Optical transitions in AlGaAs/GaAs quantum wires on GaAs(6 3 1) substrates studied by photoreflectance spectroscopy. Physica E: Low-Dimensional Systems and Nanostructures, 42(10), 2571-2574. https://doi.org/10.1016/j.physe.2010.03.019

@article{05a13ff0e2fc49dd9be8a492aa31bf32,

title = "Optical transitions in AlGaAs/GaAs quantum wires on GaAs(6 3 1) substrates studied by photoreflectance spectroscopy",

abstract = "We present the synthesis and characterization of a system of self-assembling GaAs quantum wires (QWRs) embedded in Alx Ga 1-x As barriers grown by molecular beam epitaxy on GaAs(6 3 1)-oriented substrates. We studied the optical transitions in the QWRs as a function of temperature (T) by photoreflectance (PR) spectroscopy. The energy transitions were extracted from the PR spectra employing the third-derivative functional form, and they were compared with the transitions theoretically calculated from both, a model of QWRs with cylindrical geometry and a model of a conventional square quantum well. The results show a good agreement between experimental and theoretical data in the case of the QWR model, and from this comparison we were able to identify up to 12 different transitions in the PR spectra and to study their behavior dependent on temperature.",

keywords = "MBE, Optical transitions, Photoreflectance, Quantum wires",

author = "E. Cruz-Hern{\'a}ndez and J. Hern{\'a}ndez-Rosas and Rojas-Ram{\'i}rez, {J. S.} and R. Contreras-Guerrero and R. M{\'e}ndez-Camacho and C. Meja-Garc{\'i}a and Mndez-Garca, {V. H.} and M. Lop{\'e}z-Lop{\'e}z",

note = "Funding Information: This work was partially supported by CONACyT-Mexico and ICTDF-Mexico. ",

year = "2010",

month = sep,

doi = "10.1016/j.physe.2010.03.019",

language = "Ingl{\'e}s",

volume = "42",

pages = "2571--2574",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

issn = "1386-9477",

number = "10",

}

Cruz-Hernández, E, Hernández-Rosas, J, Rojas-Ramírez, JS, Contreras-Guerrero, R, Méndez-Camacho, R, Meja-García, C, Mndez-Garca, VH & Lopéz-Lopéz, M 2010, 'Optical transitions in AlGaAs/GaAs quantum wires on GaAs(6 3 1) substrates studied by photoreflectance spectroscopy', Physica E: Low-Dimensional Systems and Nanostructures, vol. 42, no. 10, pp. 2571-2574. https://doi.org/10.1016/j.physe.2010.03.019

TY - JOUR

T1 - Optical transitions in AlGaAs/GaAs quantum wires on GaAs(6 3 1) substrates studied by photoreflectance spectroscopy

AU - Cruz-Hernández, E.

AU - Hernández-Rosas, J.

AU - Rojas-Ramírez, J. S.

AU - Contreras-Guerrero, R.

AU - Méndez-Camacho, R.

AU - Meja-García, C.

AU - Mndez-Garca, V. H.

AU - Lopéz-Lopéz, M.

N1 - Funding Information: This work was partially supported by CONACyT-Mexico and ICTDF-Mexico.

PY - 2010/9

Y1 - 2010/9

N2 - We present the synthesis and characterization of a system of self-assembling GaAs quantum wires (QWRs) embedded in Alx Ga 1-x As barriers grown by molecular beam epitaxy on GaAs(6 3 1)-oriented substrates. We studied the optical transitions in the QWRs as a function of temperature (T) by photoreflectance (PR) spectroscopy. The energy transitions were extracted from the PR spectra employing the third-derivative functional form, and they were compared with the transitions theoretically calculated from both, a model of QWRs with cylindrical geometry and a model of a conventional square quantum well. The results show a good agreement between experimental and theoretical data in the case of the QWR model, and from this comparison we were able to identify up to 12 different transitions in the PR spectra and to study their behavior dependent on temperature.

AB - We present the synthesis and characterization of a system of self-assembling GaAs quantum wires (QWRs) embedded in Alx Ga 1-x As barriers grown by molecular beam epitaxy on GaAs(6 3 1)-oriented substrates. We studied the optical transitions in the QWRs as a function of temperature (T) by photoreflectance (PR) spectroscopy. The energy transitions were extracted from the PR spectra employing the third-derivative functional form, and they were compared with the transitions theoretically calculated from both, a model of QWRs with cylindrical geometry and a model of a conventional square quantum well. The results show a good agreement between experimental and theoretical data in the case of the QWR model, and from this comparison we were able to identify up to 12 different transitions in the PR spectra and to study their behavior dependent on temperature.

KW - MBE

KW - Optical transitions

KW - Photoreflectance

KW - Quantum wires

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U2 - 10.1016/j.physe.2010.03.019

DO - 10.1016/j.physe.2010.03.019

M3 - Artículo

AN - SCOPUS:77957977050

SN - 1386-9477

VL - 42

SP - 2571

EP - 2574

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 10

ER -

Optical transitions in AlGaAs/GaAs quantum wires on GaAs(6 3 1) substrates studied by photoreflectance spectroscopy

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Keywords

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