Electron-phonon interaction and its effects on electronic properties in quantum confined systems
Electron-phonon interaction and its effects on electronic properties in quantum confined systems
批准号:
10640312
负责人:
MATSUURA Mitsuru
金额:
$2.18万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
1998
资助国家:
日本
项目状态:
已结题
起止时间:
1998 至 1999
中文摘要
(1)在量子井中,量子井中的兴奋子的影响和有限的兴奋子被计算和分解。散装型和接口型声子的作用与较小的井宽相对应,反映了异常的尺寸特征。(2)混合极晶体中的LO声子和电子-LO声子相互作用是格式化的。自能量转移和有效质量校正是经过计算的。此外,LO phonons (bulk and interface type)和electron-LO phonon interaction在量子井的混合极晶体中形成,并显示出将被分成三种类型,以识别出井或屏障中的混合晶体。Polaron能源转换器在不同的系统中进行计算。更多关于polaron效应在量子良好的稳定混合极地晶体中的量子良好效应是计算的,并在与良好宽度依赖的关系以及各种LO声子模式对性能的贡献(例如exci) ... More Ton-LO声子相互作用和exciton polaron能量转移。该方法被专门应用于有趣的量子井系统,以稳定混合极地晶体,并使用qallium nitride或锌化合物。(3)LO phonons (bulk和接口类型)对电子的影响,在一个非极矩阵理论上被确认在一个物理量子点嵌入中。各种方法已被开发出来,以提供结果,使其有效地达到点半径和电子LO声子耦合强度的宽范围。此外,Polaron在一个球体量子点中的异常效应的大小依赖性也是通过使用一种不同的方法研究的。激动素能、激动素-声子相互作用能和虚拟声子数目是计算的。这清楚地显示了Polaron对一个异常消失在小量子点的极限中的影响。(4)CuCl microcrystals embedded in an SiO-D22-D2 matrix is prepared by an novel RF-magnetoron sputtering combined with an inductively coupled plasma。对系统中的exciton和biexciton的光学属性(吸收和发光特性)进行了调查。在发光的特殊强度中,异常和生物异常具有线性和超线性的依赖性,尊重地。Less(低)
英文摘要
(1) Polaron effects on an exciton in quantum well with an infinite potential barrier and a finite one are calculated and discussed. Role of the bulk-type and the interface-type phonon changes according to the large to small well width, which reflects the dimensional character of an exciton.(2) LO phonons and electron-LO phonon interaction in mixed polar crystals are formulated. Self-energy shift and effetvie mass correction are calculated. Also LO phonons (bulk and interface type) and electron-LO phonon interaction in quantum well consisting of mixed polar crystals are formulated and are shown to be divided into three types according to whether the well or the barrier is made of mixed crystals. Polaron energy shifts are calculated in various systems. Moreover polaron effects on exciton in quantum well consisting of mixed polar crystals are calculated and are discussed in relation to the well-width dependence and the contribution of the various LO phonon modes on properties such as exci … More ton-LO phonon interaction and exciton polaron energy shift. Specially the method is applied to the interesting quantum well systems consisting of mixed polar crystals with the use of qallium nitride or zinc compounds.(3)Effects of LO phonons (bulk and interface type) for an electron, confined in a spherical quantum dot embedded in a nonpolar matrix are studied theoretically. The variational method is developed to provide the results, being valid for the wide range of the dot radius and the electron-LO phonon coupling strength. Also the size dependence of polaron effects on an exciton in a spherical quantum dot is studied by using a variational method. Exciton energy, exciton-phonon interaction energy and the virtual phonon number are calculated. It is clearly shown that polaron effects on an exciton vanish in the limit of the small quantum dot.(4)CuCl microcrystals embedded in an SiOィイD22ィエD2 matrix is prepared by an novel RF-magnetoron sputtering combined with an inductively coupled plasma. Optical properties (absorption and luminescence spectra) of the exciton and the biexciton in the system are investigated. In the luminescence spectra intensities of the exciton and the biexciton have linear and superlinear dependencies, respectively. Less
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R.Zheng,M.Matsuura: "Electron-optical phonon interaction in quantum wells consisting of mixed instals"Phys.Rev.B. 60. 4937-4943 (1999)
R.Zheng,M.Matsuura:“由混合装置组成的量子阱中的电子光声子相互作用”Phys.Rev.B。
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R.Zheng,M.Matsuura: "Optical phonons and electron-phonon interaction in quantum wells consisting of mixed crystals"J.of Luminescence. (in press). (2000)
R.Zheng,M.Matsuura:“由混合晶体组成的量子阱中的光学声子和电子-声子相互作用”J.of Luminescent。
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H.Kurisu,K.Nagoya,N.Nakayama,S.Yamamoto,M.Matsuura: "Exciton and biexciton properties of cure microcrystals in a SiO_2 matrix prepared by sputtering method"J.of Luminescence. (in press). (2000)
H.Kurisu、K.Nagoya、N.Nakayama、S.Yamamoto、M.Matsuura:“溅射法制备的 SiO_2 基体中固化微晶的激子和双激子性质”J.of Luminescent。
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K. Oshiro, K. Akai and M. Matsuura: "Polaron in a spherical quantum dot embedded in a nonpolar matrix."Phys. Rev. B. 58. 7986-7993 (1998)
K. Oshiro、K. Akai 和 M. Matsuura:“嵌入非极性矩阵中的球形量子点中的极化子。”
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名古屋和孝,栗巣普揮,赤井光治,山本節夫,松浦満,他: "スパッタング法を用いた半導体超微粒子の作製" 光物性研究会'98論文集. 279-282
Kazutaka Nagoya、Fuki Kurisu、Mitsuharu Akai、Setsuo Yamamoto、Mitsuru Matsuura 等人:“使用溅射法制备半导体超细颗粒”光物理物理研究组论文集98。
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共 43 条
Electronic characteristics of Metal/Insulator Super-lattice, based on the first principle electronic structure calculation
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批准号:13640333
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项目类别:Grant-in-Aid for Scientific Research (C)
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资助金额:$1.92万
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财政年份:2001
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负责人:MATSUURA Mitsuru
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依托单位:
海外基金