Influence of phonon dispersion on average optical phonon number of weak-coupling polaron in a parabolic quantum dot

Abstract

Abstract:

The influence of phonons dispersion on the properties of the average optical phonon number of weak-coupling polaron in a parabolic quantum dot is studied by using the linear-combination operator and unitary transformation method. Taking account of the longitudinal optical (LO) phonons dispersion in a parabolic approximation, the ground state energy and the average number of virtual phonons around the electron as a function of the coefficient of the phonon dispersion are obtained. Numerical calculation results show that the ground state energy decreases with increasing the coefficient of the phonon dispersion, the average number of virtual phonons around the electron increases with increasing the coefficient of phonon dispersion.

Key words: optoelectronics; parabolic quantum dot; linear combination operator; polaron; phonon dispersion

CLC Number:

O469

YANG Hongtao, JI Wenhui, FENG Youliang, HU Wentao. Influence of phonon dispersion on average optical phonon number of weak-coupling polaron in a parabolic quantum dot[J]. J4, 2016, 33(1): 106-110.

References

[1] Jian Ronghua, Zhao Cuilan. Properties of strong-coupling magnetopolaron in a semiconductor quantum well [J]. Chinese Journal of Quantum Electronics (量子电子学报), 2010, 27(4): 480-485 (in Chinese) .
[2] Ding Zhaohua, Su Li, He Rui. Influence of magnetic field on properties of excited state of bound polaron in
quantum wires [J]. Chinese Journal of Quantum Electronics (量子电子学报), 2011, 28(6): 748-752 (in Chinese) .
[3] Ge Jun , Wang Na, et al. Influence of speed of polaron on properties of magnetopolaron in quantum dots[J]. Chinese Journal of Quantum Electronics (量子电子学报), 2011, 28(1): 104-109 (in Chinese) .
[4] Zhao Fengqi, Sachuronggui, et al. Energy of Magnetopolaron in wurtzite GaN/Al0.3Ga0.7N quantum well[J]. Acta Optica Sinica (光学学报), 2011, 30(4): 0416003-1-7 (in Chinese) .
[5] Chen Shihua. The effective mass of impurity–bound polaron in a two- and three-dimensional quantum dot[J]. J. Low. Temp. Phys., 2013, 170: 108-112.
[6] Kumar S S, Peter A J, Chang K Y. Polaron effect of a two electron parabolic quantum dot [J]. Commun. Theor. Phy., 2013, 59(6): 763-768 .
[7] Eerdunchaolu, Bai Xufang, Han Chao. Properties of the internal excited state of the strong-coupling magneto-bipolaron in a parabolic quantum dot [J]. Acta Physica Sinica (物理学报), 2014, 63(2): 027501-1-8 (in Chinese) .
[8] Wang Zhiwu, Liu Lei, Li Shushen. Relaxation times of the two-phonon processes with spin-flip and spin-conserving in quantum dots [J]. Appl. Phys. Lett., 2014, 104: 142404-1-5.
[9] Khordad R, Sadeghzadeh M A, Mohamadian A. Specific heat of a parabolic cylindrical quantum dot in the presence of magnetic field [J]. Superlatt. Microstruct., 2013, 58: 11-15.
[10] Zhao Cuilan, Liu Shasha, Zhao Lili. The influence of phonon and temperature on properties of polaron in spherical quantum dot [J]. J. At. Mol. Phys., 2012, 29(5): 877-881(in Chinese) .
[11] Liu Shasha, Zhao Cuilan. The decoherence effect of phonon in qubit in spherical quantum dot [J]. J. At. Mol. Phys., 2011, 28(6): 1095-1099(in Chinese) .
[12] Wang Xiaowu, Xiao Juan, Li Jianhong, et al. Effect of spin on ground-state energy of weak-coupled bound magnetopolaron in asymmetry quantum dot [J]. Chinese Journal of Quantum Electronics (量子电子学报), 2011, 28(4): 483-489 .
[13] Gu Shi-wei. Effect of phonon dispersion on polaron [J]. Journal of Applied Sciences (应用物理学报), 1983, 1(4): 319-325 (in Chinese) .
[14] Ji Wenhui, Yang Hongtao, Huhemandula, Hu Wentao. Influence of phonon dispersionon on the properties of the average number of weak-coupling magnetopolaron in a parabolic quantum dot[J]. J. At. Mol. Phys. (原子与分子物理学报), 2014, 31(6): 951-954 (in Chinese) .
[15] Ji Wenhui, Yang Hongtao, Huhemandula, Hu Wentao. The Influence of the Phonon Dispersion and a Magnetic Field on the Self-Trapping Energy of the Polaron in a Polar Crystal [J]. Journal of Quantum Optics (量子光学学报), 2015, 21(1): 64-68 (in Chinese) .
[16] Yang Hongtao, Ji Wenhui, Huhemandula. Effect of phonon dispersion on weak-coupling polaron in a parabolic quantum dot (量子电子学报), 2015, 32(1): 241-245 (in Chinese) .

Influence of phonon dispersion on average optical phonon number of weak-coupling polaron in a parabolic quantum dot

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[3]	WANG Xiuqing，XIAO Jinglin. Temperature Effect on Vibrational Frequency of Strong Coupling Polaron in a Parabolic Quantum Wire [J]. J4, 2015, 32(4): 503-506.
[4]	YANG Hong-tao, JI Wen-hui, Huhemandula. Effect of phonon dispersion on weak-coupling polaron in a parabolic quantum dot [J]. J4, 2015, 32(2): 241-245.
[5]	Zhang Cai-yun，An Zhen-jie，Yang Li-jie，Pan Gui-xia. Remote preparation of two-qubit state using four-qubit cluster state [J]. J4, 2012, 29(5): 566-571.
[6]	Sarengaowa, ZHAO Cui-lan. Temperature effect of polaron in quantum disk [J]. J4, 2012, 29(4): 495-499.
[7]	DING Zhao-hua, SU Li, HE Rui . Influence of magnetic field on properties of excited state of bound polaron in quantum wires [J]. J4, 2011, 28(6): 748-752.
[8]	MU Ren, XIAO Jing-ling. Influence of Coulomb field on weak-coupling polaron in an asymmetric quantum dot [J]. J4, 2011, 28(4): 490-494.
[9]	GE Jun，WANG Na，ZHAO Cui-Lan. Influence of speed of polaron on properties of magnetopolaron in quantum dots [J]. J4, 2011, 28(1): 104-109.
[10]	BAI Rui-feng, XIAO Jing-lin. Properties of excited state of the polaron in quantum rods [J]. J4, 2010, 27(6): 743-748.
[11]	FU Fang-zheng , LI Ming. Incoherent backscattering of random medium [J]. J4, 2010, 27(6): 693-699.
[12]	E Er-Dui-Chao-Lu, Wang-Bao-Chang. Influence of temperature on the mean number of phonons for strong-coupling magnetopolaron in an asymmetric quantum dot [J]. J4, 2009, 26(4): 477-481.