Thickness Effect on Quantum Transition of The Polaron in An Asymmetric Gaussian Potential Quantum Dot Within An Electric Field

ZHAO Yu-wei; WANG Guo-sheng; HAN Chao; EERDUNCHAOLU

doi:10.3788/fgxb20183911.1513

您当前的位置：

首页 >

文章列表页 >

Thickness Effect on Quantum Transition of The Polaron in An Asymmetric Gaussian Potential Quantum Dot Within An Electric Field

更新时间：2020-08-12

- Thickness Effect on Quantum Transition of The Polaron in An Asymmetric Gaussian Potential Quantum Dot Within An Electric Field
- Chinese Journal of Luminescence Vol. 39, Issue 11, Pages: 1513-1518(2018)
- 作者机构：
  
  河北科技师范学院凝聚态物理研究所,河北秦皇岛,066004
- 作者简介：
- 基金信息：
  
  Supported by Natural Science Foundation of Hebei Province (E2013407119);Open Resea
- DOI：10.3788/fgxb20183911.1513
  CLC： O469
- Received：12 March 2018，
  
  Revised：13 May 2018，
  
  Published Online：11 June 2018，
  
  Published：05 November 2018
- 稿件说明：
移动端阅览
赵玉伟, 王国胜, 韩超等. 电场中非对称高斯势量子点内极化子量子跃迁的厚度效应[J]. 发光学报, 2018,39(11): 1513-1518

ZHAO Yu-wei, WANG Guo-sheng, HAN Chao etc. Thickness Effect on Quantum Transition of The Polaron in An Asymmetric Gaussian Potential Quantum Dot Within An Electric Field[J]. Chinese Journal of Luminescence, 2018,39(11): 1513-1518
赵玉伟, 王国胜, 韩超等. 电场中非对称高斯势量子点内极化子量子跃迁的厚度效应[J]. 发光学报, 2018,39(11): 1513-1518 DOI： 10.3788/fgxb20183911.1513.

ZHAO Yu-wei, WANG Guo-sheng, HAN Chao etc. Thickness Effect on Quantum Transition of The Polaron in An Asymmetric Gaussian Potential Quantum Dot Within An Electric Field[J]. Chinese Journal of Luminescence, 2018,39(11): 1513-1518 DOI： 10.3788/fgxb20183911.1513.

摘要

计及量子点厚度下，分别选取抛物势和高斯势描写盘型量子点中电子的横向束缚势和纵向束缚势，采用Pekar类型变分法推导出量子点中极化子的基态和第一激发态能量本征值和本征函数，以此为基础，构造了一个二能级结构，并基于二能级体系理论，讨论了极化子在外电场作用下的量子跃迁问题。结果表明，高斯束缚势比抛物束缚势更能精准反映量子点中真实的束缚势；量子点的厚度对极化子的跃迁几率

所带来的影响有趣且有实际意义，不可忽略；电声耦合强度

、电场强度

、非对称高斯势的势垒高度

和束缚范围

等对极化子的基态与第一激发态能量以及量子跃迁的影响显著；本文的结果有助于探讨利用这些物理量来调控量子点的输运特性和光学性质的途径和方法。

Abstract

Considering the thickness of the quantum dot

the eigenvalues and eigenfunctions of the polaron ground state and first exited state in a quantum dot were derived by using the Pekar variational method with the harmonic and Gauss potentials as the transverse and longitudinal confinement potentials

respectively. Based on above two states

a two-level system was constructed. Then

the polaron quantum transition affected by an electric field was discussed in terms of the two-level system theory. The results indicate that the Gauss potential reflects the real confining potential more accurately than the parabolic potential; the influence of the thickness of the quantum dot on the transition probability

of the polaron is interesting and significant

and must not be ignore; the ground and the first excited states' energies and the corresponding transition probability of the polaron are influenced significantly by some physical quantities

such as the strength

of the electron-phonon coupling

strength

of the electric field

barrier

and confinement range

of the asymmetric Gauss potential

suggesting the transport and optical properties of the quantum dot can be manipulated further though those physical quantities.

关键词

Keywords

references

YANG S, DOU X M, YU Y,

et al.. Single-photon emission from gaas quantum dots embedded in nanowires[J]. Chin. Phys. Lett., 2015, 32(7):077804-1-4.

XUE Y Z, CHEN Z S, NI H Q, et al.. Resonantly driven exciton Rabi oscillation in single quantum dots emitting at 1300 nm[J]. Chin. Phys. B, 2017, 26(8):084202-084205.

LI B X, ZHENG J, CHI F. Rectification effect of the heat generation by electric current in a quantum dot molecular[J]. Chin. Phys. Lett., 2014, 31(5):057302-1-5.

FENG Z Y, YAN Z W. Polaron effect on the optical rectification in spherical quantum dots with electric field[J]. Chin. Phys. B, 2016, 25(10):107804-1-6.

LI W P, XIAO J L, YIN J W,et al.. The energy levels of a two-electron two-dimensional parabolic quantum dot[J]. Chin. Phys. B, 2010, 19(4):047102-1-5.

CHEN Y J, XIAO J L.The temperature effects on the parabolic quantum dot qubit in the electric field[J]. J. Low Temp. Phys., 2013, 170:60-67.

BAI X F, XIN W, YIN H W,et al.. The properties of the ground state of the frhlich bipolaron with rashba spin-orbit coupling in a quantum dot[J]. Int. J. Theor. Phys., 2017, 56:1673-1684.

SUN Y, DING Z H, XIAO J L. Effects of temperature and magnetic field on the coherence time of a RbCl parabolic quantum dot qubit[J]. J. Electron. Mater., 2017, 46(1):439-442.

谷娟, 梁九卿. 施主中心量子点能谱分析[J]. 物理学报, 2005, 54(11):5335-5338. GU J, LIANG J J. Energy spectrum analysis of donor-center quantum dot[J]. Acta Phys. Sinica, 2005, 54(11):5335-5338. (in Chinese)

FOTUE A J, KENFACK S C, TIOTSOP M, et al.. Temperature, impurity and electromagnetic field effects on the transition of a two-level system in a triangular potential[J]. Eur. Phys. J. Plus, 2016, 131:75-81.

JACAK L, HAWRYLAK P, WOJS A. Quantum Dots[M]. Berlin:Springer, 1998.

ADAMOWSKI J, SOBKOWICZ M, SZAFRAN B,et al.. Electron pair in a Gaussian confining potential[J]. Phys. Rev. B, 2000, 62:4234-4237.

XIE W F. Two interacting electrons in a Gaussian confining potential quantum dot[J]. Solid State Commun., 2003, 127(5):401-405.

HAI G Q, PEETERS F M, DEVREESE J T. Polaron-cyclotron-resonance spectrum resulting from interface-and slab-phonon modes in a GaAs/AlAs quantum well[J]. Phys. Rev. B, 1993, 47:10358-10362.

LIANG S D, CHEN C Y, JIANG S C, et al.. Size effect on exciton-phonon scattering in quantum wires[J]. Phys. Rev. B, 1996, 53:15459-15463.

XIAO J L.The effect of electric field on RbCl asymmetric Gaussian potential quantum well qubit[J]. Int. J. Theor. Phys., 2016, 55:147-154.

KHORDAD R, GOUDARZI S, BAHRAMIYAN H. Effect of temperature on lifetime and energy states of bound polaron in asymmetrical Gaussian quantum well[J]. Indian J. Phys., 2016, 90(6):659-664.

LEE T D, LOW F M, PINES D. The motion of slow electrons in a crystal[J]. Phys. Rev., 1953, 90:297-302.

YILDIRIM T, ERCELEBI A. The grounds-state description of the optical polaron versus the effective dimensionality in quantum-well-type systems[J]. J. Phys.:Condens. Matter, 1991, 3(10):1271-1278.

EERDUNCHAOLU, XIAO J L. Effects of lattice vibration on the properties of the strong-coupling polaron in a quantum well[J]. J. Phys. Soc. Jpn., 2007, 76(4):044702-1-7.

Views

194

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Influence of Magnetic Field on The Properties of Weak-coupling Polaron in Graphene

Electromagnetic Field Dependence of Quantum Dot Qubit with The Thickness of Quantum Dot

Polaron Energy Level in Wurtzite Mg_xZn_1-xO/Mg_0.3Zn_0.7O Parabolic Quantum Well

Polaron Effects of Exciton in ZnSe/ZnS Parabolic Quantum Wells

Interaction Energy of Weak Coupling Polaron in an Asymmetric Quantum Dot

Related Author

XIAO Jing-lin

ZHAO Ying

PEI Zhi-cheng

DING Zhao-hua

EERDUNCHAOLU

SU Du

YIN Hong-wu

WUYUNQIMUGE

Related Institution

College of Physics and Electronic Information, Inner Mongolia University for Nationalites

中国石油大学化学工程学院

河北科技师范学院物理系

内蒙古民族大学物理与电子信息学院

College of Physics and Electronic Information, Inner Mongolia Normal University

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China Postal code：130033
Tel：0431-86176862 Email：fgxbt@126.com
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰