抛物量子点中弱耦合杂质束缚磁极化子的光学声子平均数

J4 ›› 2009, Vol. 26 ›› Issue (5): 636-640.

• 半导体光电 • 上一篇

抛物量子点中弱耦合杂质束缚磁极化子的光学声子平均数

胡义嘎¹ 尹辑文¹ 肖景林²

1.内蒙古赤峰学院物理与电子信息工程系内蒙古赤峰 024000；
2.内蒙古民族大学物理与电子信息学院内蒙古通辽 028043

出版日期:2009-09-28 发布日期:2009-08-27
作者简介:胡义嘎（1960-），赤峰人，副教授，现从事凝聚态物理研究。E-mail:baohuyiga@163.com
基金资助:
国家自然科学基金资助项目(10747002)

Average number of optical phonons of weak-coupling impurity bound magnetopolaron in a parabolic quantum dot

HU Yi-Ga¹, YIN Ji-Wen¹, XIAO Jing-Lin²

1 Department of physics and electronic informational engineering, Inner Mongolia Chifeng College, Chifeng 02400, China；
2 College of Physics and Electronic Information Inner Mongolia University for Nationalities, Tongliao 028043, China

Published:2009-09-28 Online:2009-08-27

摘要/Abstract

摘要：

采用线性组合算符和幺正变换方法研究库仑场对抛物量子点中弱耦合杂质束缚磁极化子的振动频率和光学声子平均数的影响。导出量子点中弱耦合杂质束缚磁极化子的振动频率和光学声子平均数随量子点的有效受限长度、库仑束缚势和磁场的回旋共振频率的变化关系。数值计算结果表明：弱耦合杂质束缚磁极化子的振动频率和光学声子平均数随量子点的有效受限长度的减小而迅速增大，表现出奇特的量子尺寸效应。随磁场的回旋共振频率和库仑束缚势的增加而增加。

关键词: 低维结构, 抛物量子点, 束缚磁极化子, 振动频率, 光学声子平均数

Abstract:

The influences of the Coulomb field on the vibrational frequency and the mean number of optical phonons of weak-coupling impurity bound magnetopolaron in a parabolic quantum dot are studied using the linear-combination operator and the unitary transformation method. The expressions for the vibration frequency and the mean number of optical phonons of the weak-coupling impurity bound magnetopolaron in a parabolic quantum dot as a function of the effective confinement length of quantum dot,the Coulomb bound potential and the cyclotron resonance frequency of magnetic field are derived. Numerical calculations are performed and the results show that the vibration frequency and the mean number or optical phonons of the weak-coupling impurity bound magnetopolaron in a parabolic quantum dot will increase rapidly with decreasing the effective confinement length of quantum dot. These can be attributed to the interesting quantum size effects. The vibration frequency and the mean number of optical phonons will increase with increasing the cyclotron resonance frequency of magnetic field and the Coulomb bound potential.

Key words: low dimensional structure, parabolic quantum dot, bound magnetopolaron, vibration frequency; , mean number of optical phonons

胡义嘎尹辑文肖景林. 抛物量子点中弱耦合杂质束缚磁极化子的光学声子平均数[J]. J4, 2009, 26(5): 636-640.

HU Yi-Ga, YIN Ji-Wen, XIAO Jing-Lin. Average number of optical phonons of weak-coupling impurity bound magnetopolaron in a parabolic quantum dot[J]. J4, 2009, 26(5): 636-640.

参考文献

[1]Chen C Y ,Jin P W ,Li W S,et al. Thickness effect on impurity-bound polaronic energy levels in a parabolic quantum dot in magnetic fields .
[J]Phys.Rev.1997,B 56(23):14913-14916.

[2] Petukhov A G ,Foyeel M .Bound magnetic polaron hopping and giant magnetoresistance in magnetic semiconductors and nanostructure
[J]Phys.Rev,2000,B62(1):520-531.

[3] Nguyen V L，Nguyen M T，Nguyen T D. Magnetic field effects of the binding energy of hydrogen impurites in quantum dots with parabolic confinements
[J].Physica B 2000; 292(1-2):153-159.

[4] Corella M A, Rosas R. Hydrogenic impu- rities in spherical quantum dots in a magnetic field
[J].J.Appl.Phys,2001; 89(5):2333- 2339.

[5] Li Y X, Liu Z J, Di B, Liu J J.The influence of magnetic field on the binding energy of a hydrogenic impurity in cubic quantum dots
[J].Journal of Hebei Noumal University.(河北师范大学学报)，2002;26(4):359-361.(in Chinese)

[6] Kandemir B S ,Cetin A .Ground-and first excited state energies of impurity magnetopolaron in an anisotropic quantum dot
[J] .Phys.Rev,2002,B65(5):054303-1-11.

[7]Jacak L ,krasnyj J ,Jacak D ,et al.Magnetopolaron in a weakly elliptical InAs\GaAs quantum dot
[J].Phys. Rev,2003,B67(3):035303-1-13

[8]Khamkhami J E ,Feddi E ,Assaid E ,et al.Magneto-bound polaron in CdSe spherical quantum dots :strong coupling approach
[J].Phys.E ,2005,25: 366-373

[9] 郭富胜，赵铧，朱孟兆，李韦.量子点异质结中类氢杂质电子束缚能级的计算
[J].量子电子学报，2007，24（6）:721-726

[10]Yu Y F,Yin J W,Xiao J L ,Influence of the temperature on the properties of weak-coupling bound magnetopoaron in a parabolic quantum dot
[J].J.Chin Lumin (发光学报),2006,27(4):442-446.

[11] Chen S H, Xiao J L.Temperature effect on impurity-bound polaronic energy levels in a parabolicquantum dot in magnetic fields
[J]. Int. J. Mod. Phys. B,2007, 21(32):5331-5337.

抛物量子点中弱耦合杂质束缚磁极化子的光学声子平均数

Average number of optical phonons of weak-coupling impurity bound magnetopolaron in a parabolic quantum dot

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 6

编辑推荐

Metrics

本文评价

[1]	张建芳, 肖景林∗. 非对称半指数量子阱中强耦合极化子振动频率[J]. 量子电子学报, 2020, 37(6): 699-703.
[2]	杨洪涛冀文慧冯有良胡文弢. 声子色散对量子点中弱耦合极化子光学声子平均数的影响[J]. J4, 2016, 33(1): 106-110.
[3]	杨洪涛冀文慧呼和满都拉. 抛物量子点中弱耦合极化子声子色散效应[J]. J4, 2015, 32(2): 241-245.
[4]	丁朝华苏莉何锐. 磁场对量子线中束缚极化子激发态性质的影响[J]. J4, 2011, 28(6): 748-752.
[5]	汪哓武肖娟李建红李志新. 自旋对非对称量子点中弱耦合束缚磁极化子基态能量的影响[J]. J4, 2011, 28(4): 483-489.
[6]	白瑞峰肖景林. 量子棒中极化子激发态的性质[J]. J4, 2010, 27(6): 743-748.