Semiconductor quantum tubes: Dielectric modulation and excitonic response

David Kammerlander; Filippo Troiani; Guido Goldoni

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Semiconductor quantum tubes: Dielectric modulation and excitonic response

机译：半导体量子管：介电调制和激子响应

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摘要

We study theoretically the optical properties of quantum tubes, one-dimensional semiconductor nanostruc-tures where electrons and holes are confined to a cylindrical shell. In these structures, which bridge between two-dimensional and one-dimensional systems, the electron-hole interaction may be modulated by a dielectric substance outside the quantum tube and possibly inside its core. We use the exact Green's function for the appropriate dielectric configuration and exact diagonalization of the electron-hole interaction within an effective-mass description to predict the evolution of the exciton binding energy and oscillator strength. Contrary to the homogeneous case, in dielectrically modulated tubes, the exciton binding is a function of the tube diameter and can be tuned to a large extent by structure design and proper choice of the dielectric media.

机译：我们从理论上研究量子管的光学性质，量子管是一维半导体纳米结构，其中电子和空穴被限制在圆柱壳中。在这些在二维和一维系统之间架桥的结构中，电子-空穴相互作用可以通过量子管外部甚至可能在其核内部的介电物质进行调制。我们在有效质量描述中使用适当格林函数的适当介电结构和电子-空穴相互作用的精确对角线化，以预测激子结合能和振荡器强度的演变。与均匀情况相反，在介电调制管中，激子结合是管直径的函数，可以通过结构设计和适当选择介电介质在很大程度上进行调节。

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来源
《Physical review》 |2010年第11期|p.115310.1-115310.8|共8页
作者
David Kammerlander; Filippo Troiani; Guido Goldoni;
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作者单位

Centro S3, CNR-Istituto di Nanosciencze, Via Campi 213A, I-41100 Modena, Italy Dipartimento di Fisica, Universita di Modena e Reggio Emilia, Via Campi 213/A, 41100 Modena, Italy;

rnCentro S3, CNR-Istituto di Nanosciencze, Via Campi 213A, I-41100 Modena, Italy;

rnCentro S3, CNR-Istituto di Nanosciencze, Via Campi 213A, I-41100 Modena, Italy Dipartimento di Fisica, Universita di Modena e Reggio Emilia, Via Campi 213/A, 41100 Modena, Italy;

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正文语种 eng
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关键词
collective excitations; nanotubes;

机译：集体激励;纳米管;

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1. Excitonic Quasimolecules in Nano Systems of Semiconductor and Dielectric Quantum Dots [J] . Sergey I Pokutnyi Modern Chemistry & Applications . 2016,第4期

机译：半导体和介电量子点纳米系统中的激子准分子
2. Excitonic approach to the ultrafast optical response of semiconductor quantum wells [J] . Dawei Wang, Marc M. Dignam Physical review . 2009,第16期

机译：激子方法对半导体量子阱的超快光学响应
3. Excitonic and biexcitonic effects in the coherent optical response of semiconductor quantum dots [J] . Ulrich Hohenester, Fausto Rossi, Elisa Molinari Physica, B. Condensed Matter . 1999,第1a4期

机译：半导体量子点相干光响应中的激子和双激子效应
4. Excitonic Quasimolecules in Nanoheterosystems Containing Semiconductor and Dielectric Quantum Dots [C] . Sergey I. Pokutnyi International Conference Nanotechnology and Nanomaterials . 2017

机译：纳米能源系统中含有半导体和介电量子点的激发型准分配
5. Theory of excitonic optical properties of semiconductor quantum wells and Bragg structures. [D] . Yang, Zhenshan. 2005

机译：半导体量子阱和布拉格结构的激子光学性质理论。
6. Experimental methods of post-growth tuning of the excitonic fine structure splitting in semiconductor quantum dots [O] . Johannes D Plumhof, Rinaldo Trotta, Armando Rastelli, 2012

机译：半导体量子点中激子精细结构分裂后生长调节的实验方法
7. Semiconductor quantum tubes: dielectric modulation and excitonic response [O] . Kammerlander, David, Troiani, Filippo, Goldoni, Guido 2010

机译：半导体量子管：介电调制和激子响应
8. Modulation Response of a Long-Cavity, Gain-Levered Quantum-Dot Semiconductor Laser - Postprint. [R] . Usechak, N. G., Pochet, M., Schmidt, J., 2014

机译：长腔增益 - 量子点半导体激光器的调制响应 - 后印刷。

Semiconductor quantum tubes: Dielectric modulation and excitonic response

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