The Effect of a Single Off-Center Shallow Donor Atom on the Binding Energy and Diamagnetic Susceptibility in a GaAs Horn Torus Quantum Dot
In this work, we have studied an electron confined in a GaAs Horn torus quantum dot in the presence of a shallow donor impurity. Using the effective mass approximation and by considering an infinite confinement potential, the Schrödinger equation was calculated by the finite difference method. The e...
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Veröffentlicht in: | Solid state phenomena 2023-09, Vol.349, p.133-144 |
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creator | Chouef, Soufiane Boussetta, Reda Duque, Carlos Alberto El-Miad, Abdelhamid Kerkour Hbibi, Mohammed Belamkadem, Laaziz Chnafi, Mohamed El Hadi, Mohamed El Moussaouy, Abdelaaziz Mommadi, O. |
description | In this work, we have studied an electron confined in a GaAs Horn torus quantum dot in the presence of a shallow donor impurity. Using the effective mass approximation and by considering an infinite confinement potential, the Schrödinger equation was calculated by the finite difference method. The electron-impurity binding energy and the diamagnetic susceptibility are studied for different geometric sizes of the Horn torus. In addition, the effect of the radial and angular positions of the shallow donor impurity on the binding energy and the diamagnetic susceptibility are examined. The results show that the binding energy is much higher at small sizes of the nano system. Also, the diamagnetic susceptibility exhibits a symmetric behavior as a function of the angular position of the shallow impurity donor unlike that when the impurity moves radially. The influences of these parameter variants help us to better understand the effects of the size of the quantum dot and the position of the donor impurity, which improve the sensitive of the opto-electronic devices. |
doi_str_mv | 10.4028/p-BMi4VQ |
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Using the effective mass approximation and by considering an infinite confinement potential, the Schrödinger equation was calculated by the finite difference method. The electron-impurity binding energy and the diamagnetic susceptibility are studied for different geometric sizes of the Horn torus. In addition, the effect of the radial and angular positions of the shallow donor impurity on the binding energy and the diamagnetic susceptibility are examined. The results show that the binding energy is much higher at small sizes of the nano system. Also, the diamagnetic susceptibility exhibits a symmetric behavior as a function of the angular position of the shallow impurity donor unlike that when the impurity moves radially. The influences of these parameter variants help us to better understand the effects of the size of the quantum dot and the position of the donor impurity, which improve the sensitive of the opto-electronic devices.</description><identifier>ISSN: 1012-0394</identifier><identifier>ISSN: 1662-9779</identifier><identifier>EISSN: 1662-9779</identifier><identifier>DOI: 10.4028/p-BMi4VQ</identifier><language>eng</language><publisher>Zurich: Trans Tech Publications Ltd</publisher><subject>Angular position ; Binding energy ; Diamagnetism ; Finite difference method ; Impurities ; Mathematical analysis ; Optoelectronic devices ; Parameter sensitivity ; Quantum dots ; Schrodinger equation ; Toruses</subject><ispartof>Solid state phenomena, 2023-09, Vol.349, p.133-144</ispartof><rights>2023 Trans Tech Publications Ltd</rights><rights>Copyright Trans Tech Publications Ltd. 2023</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c205Q-2efe048e198185c4790f168cd065d9a8deec36a2653de926dac577e8231a90d43</citedby><cites>FETCH-LOGICAL-c205Q-2efe048e198185c4790f168cd065d9a8deec36a2653de926dac577e8231a90d43</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttps://www.scientific.net/Image/TitleCover/6918?width=600</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Chouef, Soufiane</creatorcontrib><creatorcontrib>Boussetta, Reda</creatorcontrib><creatorcontrib>Duque, Carlos Alberto</creatorcontrib><creatorcontrib>El-Miad, Abdelhamid Kerkour</creatorcontrib><creatorcontrib>Hbibi, Mohammed</creatorcontrib><creatorcontrib>Belamkadem, Laaziz</creatorcontrib><creatorcontrib>Chnafi, Mohamed</creatorcontrib><creatorcontrib>El Hadi, Mohamed</creatorcontrib><creatorcontrib>El Moussaouy, Abdelaaziz</creatorcontrib><creatorcontrib>Mommadi, O.</creatorcontrib><title>The Effect of a Single Off-Center Shallow Donor Atom on the Binding Energy and Diamagnetic Susceptibility in a GaAs Horn Torus Quantum Dot</title><title>Solid state phenomena</title><description>In this work, we have studied an electron confined in a GaAs Horn torus quantum dot in the presence of a shallow donor impurity. Using the effective mass approximation and by considering an infinite confinement potential, the Schrödinger equation was calculated by the finite difference method. The electron-impurity binding energy and the diamagnetic susceptibility are studied for different geometric sizes of the Horn torus. In addition, the effect of the radial and angular positions of the shallow donor impurity on the binding energy and the diamagnetic susceptibility are examined. The results show that the binding energy is much higher at small sizes of the nano system. Also, the diamagnetic susceptibility exhibits a symmetric behavior as a function of the angular position of the shallow impurity donor unlike that when the impurity moves radially. The influences of these parameter variants help us to better understand the effects of the size of the quantum dot and the position of the donor impurity, which improve the sensitive of the opto-electronic devices.</description><subject>Angular position</subject><subject>Binding energy</subject><subject>Diamagnetism</subject><subject>Finite difference method</subject><subject>Impurities</subject><subject>Mathematical analysis</subject><subject>Optoelectronic devices</subject><subject>Parameter sensitivity</subject><subject>Quantum dots</subject><subject>Schrodinger equation</subject><subject>Toruses</subject><issn>1012-0394</issn><issn>1662-9779</issn><issn>1662-9779</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNplkE1LAzEQhhdR8BP8CQNeRFhNsp851lqtoJTS6nWJ2Ukb2SZrkkX6F_zVRip48DRzeN5nmDdJzim5zgmrb_r09lnnr_O95IiWJUt5VfH9uBPKUpLx_DA59v6dkIzWtD5KvpZrhIlSKANYBQIW2qw6hJlS6RhNQAeLteg6-wl31lgHo2A3YA2EmLvVpo04TAy61RaEaeFOi41YGQxawmLwEvug33Snwxa0ifoHMfIwtc7A0rrBw3wQJgybKA-nyYESncez33mSvNxPluNp-jR7eByPnlLJSDFPGSokeY2UxwcKmVecKFrWsiVl0XJRt4gyKwUri6xFzspWyKKqsGYZFZy0eXaSXOy8vbMfA_rQvNvBmXiyyQinPCc545G63FHSWe8dqqZ3eiPctqGk-Wm66Ztd0xG92qHBCeMDyvWf8R_8DQmXf1U</recordid><startdate>20230906</startdate><enddate>20230906</enddate><creator>Chouef, Soufiane</creator><creator>Boussetta, Reda</creator><creator>Duque, Carlos Alberto</creator><creator>El-Miad, Abdelhamid Kerkour</creator><creator>Hbibi, Mohammed</creator><creator>Belamkadem, Laaziz</creator><creator>Chnafi, Mohamed</creator><creator>El Hadi, Mohamed</creator><creator>El Moussaouy, Abdelaaziz</creator><creator>Mommadi, O.</creator><general>Trans Tech Publications Ltd</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20230906</creationdate><title>The Effect of a Single Off-Center Shallow Donor Atom on the Binding Energy and Diamagnetic Susceptibility in a GaAs Horn Torus Quantum Dot</title><author>Chouef, Soufiane ; Boussetta, Reda ; Duque, Carlos Alberto ; El-Miad, Abdelhamid Kerkour ; Hbibi, Mohammed ; Belamkadem, Laaziz ; Chnafi, Mohamed ; El Hadi, Mohamed ; El Moussaouy, Abdelaaziz ; Mommadi, O.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c205Q-2efe048e198185c4790f168cd065d9a8deec36a2653de926dac577e8231a90d43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Angular position</topic><topic>Binding energy</topic><topic>Diamagnetism</topic><topic>Finite difference method</topic><topic>Impurities</topic><topic>Mathematical analysis</topic><topic>Optoelectronic devices</topic><topic>Parameter sensitivity</topic><topic>Quantum dots</topic><topic>Schrodinger equation</topic><topic>Toruses</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chouef, Soufiane</creatorcontrib><creatorcontrib>Boussetta, Reda</creatorcontrib><creatorcontrib>Duque, Carlos Alberto</creatorcontrib><creatorcontrib>El-Miad, Abdelhamid Kerkour</creatorcontrib><creatorcontrib>Hbibi, Mohammed</creatorcontrib><creatorcontrib>Belamkadem, Laaziz</creatorcontrib><creatorcontrib>Chnafi, Mohamed</creatorcontrib><creatorcontrib>El Hadi, Mohamed</creatorcontrib><creatorcontrib>El Moussaouy, Abdelaaziz</creatorcontrib><creatorcontrib>Mommadi, O.</creatorcontrib><collection>CrossRef</collection><jtitle>Solid state phenomena</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chouef, Soufiane</au><au>Boussetta, Reda</au><au>Duque, Carlos Alberto</au><au>El-Miad, Abdelhamid Kerkour</au><au>Hbibi, Mohammed</au><au>Belamkadem, Laaziz</au><au>Chnafi, Mohamed</au><au>El Hadi, Mohamed</au><au>El Moussaouy, Abdelaaziz</au><au>Mommadi, O.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Effect of a Single Off-Center Shallow Donor Atom on the Binding Energy and Diamagnetic Susceptibility in a GaAs Horn Torus Quantum Dot</atitle><jtitle>Solid state phenomena</jtitle><date>2023-09-06</date><risdate>2023</risdate><volume>349</volume><spage>133</spage><epage>144</epage><pages>133-144</pages><issn>1012-0394</issn><issn>1662-9779</issn><eissn>1662-9779</eissn><abstract>In this work, we have studied an electron confined in a GaAs Horn torus quantum dot in the presence of a shallow donor impurity. Using the effective mass approximation and by considering an infinite confinement potential, the Schrödinger equation was calculated by the finite difference method. The electron-impurity binding energy and the diamagnetic susceptibility are studied for different geometric sizes of the Horn torus. In addition, the effect of the radial and angular positions of the shallow donor impurity on the binding energy and the diamagnetic susceptibility are examined. The results show that the binding energy is much higher at small sizes of the nano system. Also, the diamagnetic susceptibility exhibits a symmetric behavior as a function of the angular position of the shallow impurity donor unlike that when the impurity moves radially. 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subjects | Angular position Binding energy Diamagnetism Finite difference method Impurities Mathematical analysis Optoelectronic devices Parameter sensitivity Quantum dots Schrodinger equation Toruses |
title | The Effect of a Single Off-Center Shallow Donor Atom on the Binding Energy and Diamagnetic Susceptibility in a GaAs Horn Torus Quantum Dot |
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