Effects of temperature, hydrostatic pressure, and aluminum concentration on the electro-optical properties of a D2+ molecular complex in elliptical GaAs/GaAlAs nanoflakes
The electro-optical properties, i.e., the optical response in the presence of a static electric field of a D 2 + molecular complex (two charge centers interacting with a conduction band electron)confined in self-assembled GaAs/GaAlAs flake-like quantum dots were calculated. Within the effective mass...
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| Veröffentlicht in: | Optical and quantum electronics 2023, Vol.55 (9) |
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| creator | Palacio, J. L. Giraldo-Tobón, Eugenio Pedraza-Miranda, Guillermo L. Fulla, M. R. |
| description | The electro-optical properties, i.e., the optical response in the presence of a static electric field of a
D
2
+
molecular complex (two charge centers interacting with a conduction band electron)confined in self-assembled GaAs/GaAlAs flake-like quantum dots were calculated. Within the effective mass approximation, the calculated results were successfully contrasted with analytic and numerical results for neutral donors and single electrons in strictly two-dimensional quantum dots. The electro-optical properties were calculated within the density matrix formalism in the two-level approximation since the electric field breaks the degeneracy between the ground and first excited states when the two charge centers do not collectivize the electron. The results show that an increase in a hydrostatic pressure field, in the in-situ temperature, and the aluminum concentration in the host material can tune the total absorption peak leading to redshifts (with the former probe) and blueshifts (with the other physical quantities). Suitable donor-donor separation and polarization angle values can maximize the absorption peak value. In addition, the asymmetry due to the shrinkage of the nanoflake’s top and its eccentricity can enhance the
D
2
+
/optical field coupling and make this system optically active for energies below
≈
20 meV (Terahertz band). |
| doi_str_mv | 10.1007/s11082-023-05034-x |
| format | Article |
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D
2
+
molecular complex (two charge centers interacting with a conduction band electron)confined in self-assembled GaAs/GaAlAs flake-like quantum dots were calculated. Within the effective mass approximation, the calculated results were successfully contrasted with analytic and numerical results for neutral donors and single electrons in strictly two-dimensional quantum dots. The electro-optical properties were calculated within the density matrix formalism in the two-level approximation since the electric field breaks the degeneracy between the ground and first excited states when the two charge centers do not collectivize the electron. The results show that an increase in a hydrostatic pressure field, in the in-situ temperature, and the aluminum concentration in the host material can tune the total absorption peak leading to redshifts (with the former probe) and blueshifts (with the other physical quantities). Suitable donor-donor separation and polarization angle values can maximize the absorption peak value. In addition, the asymmetry due to the shrinkage of the nanoflake’s top and its eccentricity can enhance the
D
2
+
/optical field coupling and make this system optically active for energies below
≈
20 meV (Terahertz band).</description><identifier>ISSN: 0306-8919</identifier><identifier>EISSN: 1572-817X</identifier><identifier>DOI: 10.1007/s11082-023-05034-x</identifier><language>eng</language><publisher>New York: Springer US</publisher><subject>Absorption ; Aluminum ; Aluminum gallium arsenides ; Approximation ; Characterization and Evaluation of Materials ; Computer Communication Networks ; Conduction bands ; Electric fields ; Electrical Engineering ; Gallium arsenide ; Hydrostatic pressure ; Lasers ; Mathematical analysis ; Optical activity ; Optical Devices ; Optical properties ; Optics ; Photonics ; Physics ; Physics and Astronomy ; Pressure effects ; Quantum dots ; Self-assembly ; Single electrons ; Temperature effects ; Terahertz frequencies</subject><ispartof>Optical and quantum electronics, 2023, Vol.55 (9)</ispartof><rights>The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11082-023-05034-x$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11082-023-05034-x$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Palacio, J. L.</creatorcontrib><creatorcontrib>Giraldo-Tobón, Eugenio</creatorcontrib><creatorcontrib>Pedraza-Miranda, Guillermo L.</creatorcontrib><creatorcontrib>Fulla, M. R.</creatorcontrib><title>Effects of temperature, hydrostatic pressure, and aluminum concentration on the electro-optical properties of a D2+ molecular complex in elliptical GaAs/GaAlAs nanoflakes</title><title>Optical and quantum electronics</title><addtitle>Opt Quant Electron</addtitle><description>The electro-optical properties, i.e., the optical response in the presence of a static electric field of a
D
2
+
molecular complex (two charge centers interacting with a conduction band electron)confined in self-assembled GaAs/GaAlAs flake-like quantum dots were calculated. Within the effective mass approximation, the calculated results were successfully contrasted with analytic and numerical results for neutral donors and single electrons in strictly two-dimensional quantum dots. The electro-optical properties were calculated within the density matrix formalism in the two-level approximation since the electric field breaks the degeneracy between the ground and first excited states when the two charge centers do not collectivize the electron. The results show that an increase in a hydrostatic pressure field, in the in-situ temperature, and the aluminum concentration in the host material can tune the total absorption peak leading to redshifts (with the former probe) and blueshifts (with the other physical quantities). Suitable donor-donor separation and polarization angle values can maximize the absorption peak value. In addition, the asymmetry due to the shrinkage of the nanoflake’s top and its eccentricity can enhance the
D
2
+
/optical field coupling and make this system optically active for energies below
≈
20 meV (Terahertz band).</description><subject>Absorption</subject><subject>Aluminum</subject><subject>Aluminum gallium arsenides</subject><subject>Approximation</subject><subject>Characterization and Evaluation of Materials</subject><subject>Computer Communication Networks</subject><subject>Conduction bands</subject><subject>Electric fields</subject><subject>Electrical Engineering</subject><subject>Gallium arsenide</subject><subject>Hydrostatic pressure</subject><subject>Lasers</subject><subject>Mathematical analysis</subject><subject>Optical activity</subject><subject>Optical Devices</subject><subject>Optical properties</subject><subject>Optics</subject><subject>Photonics</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Pressure effects</subject><subject>Quantum dots</subject><subject>Self-assembly</subject><subject>Single electrons</subject><subject>Temperature effects</subject><subject>Terahertz frequencies</subject><issn>0306-8919</issn><issn>1572-817X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNpFkV1LHDEUhoNUcKv-Aa8CvbTpnnzNx-WyXbWw0BsF74Y4e6JjM8mYZGD7l_yVjbtCISQkPM97Ai8hVxx-cIB6mTiHRjAQkoEGqdj-hCy4rgVreP34hSxAQsWalrdn5GtKrwBQKQ0L8r6xFvucaLA04zhhNHmO-J2-_N3FkLLJQ0-niCkdXo3fUePmcfDzSPvge_S5GEPwtKz8ghRdiYuBhamYxhU3lNA84GGEoT_FNR1DgWZnYokYJ4d7OvgiuuHTuTWrtCybWyXqjQ_WmT-YLsipNS7h5ed5Th5uNvfrO7b9fftrvdqyiSuxZ9hbpSuDylRthULZRj7JuqpbYYVG21baStULXi5K75BLzaHVfau0BIW1kOfk2zG3fP1txpS71zBHX0Z2opFcfeBQKHmk0hQH_4zxP8Wh-yilO5bSlVK6QyndXv4DLBSCnw</recordid><startdate>2023</startdate><enddate>2023</enddate><creator>Palacio, J. L.</creator><creator>Giraldo-Tobón, Eugenio</creator><creator>Pedraza-Miranda, Guillermo L.</creator><creator>Fulla, M. R.</creator><general>Springer US</general><general>Springer Nature B.V</general><scope/></search><sort><creationdate>2023</creationdate><title>Effects of temperature, hydrostatic pressure, and aluminum concentration on the electro-optical properties of a D2+ molecular complex in elliptical GaAs/GaAlAs nanoflakes</title><author>Palacio, J. L. ; Giraldo-Tobón, Eugenio ; Pedraza-Miranda, Guillermo L. ; Fulla, M. R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p142x-ecf456ae4a696e24f83b376792f25ef965f34c2125e45de1351095c945304e723</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Absorption</topic><topic>Aluminum</topic><topic>Aluminum gallium arsenides</topic><topic>Approximation</topic><topic>Characterization and Evaluation of Materials</topic><topic>Computer Communication Networks</topic><topic>Conduction bands</topic><topic>Electric fields</topic><topic>Electrical Engineering</topic><topic>Gallium arsenide</topic><topic>Hydrostatic pressure</topic><topic>Lasers</topic><topic>Mathematical analysis</topic><topic>Optical activity</topic><topic>Optical Devices</topic><topic>Optical properties</topic><topic>Optics</topic><topic>Photonics</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Pressure effects</topic><topic>Quantum dots</topic><topic>Self-assembly</topic><topic>Single electrons</topic><topic>Temperature effects</topic><topic>Terahertz frequencies</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Palacio, J. L.</creatorcontrib><creatorcontrib>Giraldo-Tobón, Eugenio</creatorcontrib><creatorcontrib>Pedraza-Miranda, Guillermo L.</creatorcontrib><creatorcontrib>Fulla, M. R.</creatorcontrib><jtitle>Optical and quantum electronics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Palacio, J. L.</au><au>Giraldo-Tobón, Eugenio</au><au>Pedraza-Miranda, Guillermo L.</au><au>Fulla, M. R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of temperature, hydrostatic pressure, and aluminum concentration on the electro-optical properties of a D2+ molecular complex in elliptical GaAs/GaAlAs nanoflakes</atitle><jtitle>Optical and quantum electronics</jtitle><stitle>Opt Quant Electron</stitle><date>2023</date><risdate>2023</risdate><volume>55</volume><issue>9</issue><issn>0306-8919</issn><eissn>1572-817X</eissn><abstract>The electro-optical properties, i.e., the optical response in the presence of a static electric field of a
D
2
+
molecular complex (two charge centers interacting with a conduction band electron)confined in self-assembled GaAs/GaAlAs flake-like quantum dots were calculated. Within the effective mass approximation, the calculated results were successfully contrasted with analytic and numerical results for neutral donors and single electrons in strictly two-dimensional quantum dots. The electro-optical properties were calculated within the density matrix formalism in the two-level approximation since the electric field breaks the degeneracy between the ground and first excited states when the two charge centers do not collectivize the electron. The results show that an increase in a hydrostatic pressure field, in the in-situ temperature, and the aluminum concentration in the host material can tune the total absorption peak leading to redshifts (with the former probe) and blueshifts (with the other physical quantities). Suitable donor-donor separation and polarization angle values can maximize the absorption peak value. In addition, the asymmetry due to the shrinkage of the nanoflake’s top and its eccentricity can enhance the
D
2
+
/optical field coupling and make this system optically active for energies below
≈
20 meV (Terahertz band).</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s11082-023-05034-x</doi></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0306-8919 |
| ispartof | Optical and quantum electronics, 2023, Vol.55 (9) |
| issn | 0306-8919 1572-817X |
| language | eng |
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| source | SpringerNature Journals |
| subjects | Absorption Aluminum Aluminum gallium arsenides Approximation Characterization and Evaluation of Materials Computer Communication Networks Conduction bands Electric fields Electrical Engineering Gallium arsenide Hydrostatic pressure Lasers Mathematical analysis Optical activity Optical Devices Optical properties Optics Photonics Physics Physics and Astronomy Pressure effects Quantum dots Self-assembly Single electrons Temperature effects Terahertz frequencies |
| title | Effects of temperature, hydrostatic pressure, and aluminum concentration on the electro-optical properties of a D2+ molecular complex in elliptical GaAs/GaAlAs nanoflakes |
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