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On the basis of Lee-Low-Pines unitary transformation, the properties of strong-coupling magnetopolarons in quantum disks (QDs) induced by the Rashba spin-orbit interaction are studied using the Tokuda improved linearly combined operator method. Results show that the state properties of magnetopolarons are closely linked with the sign of the interaction energy Eint, and the Eint of magnetopolarons changes with the transverse confinement strength 0, the cyclotron frequency of the external magnetic field c, the electron-LO phonon coupling strength , and the thickness L of QDs. The average number N of phonons increases with increasing c, 0 and , but the oscillation decreases with increasing thickness L of QDs. The effective mass m0* of magnetopolarons splits into two (m+*, m-*), induced by the Rashba spin-orbit interaction, and the values of them increase with increasing c, 0 and , but the oscillation decreases with increasing thickness L of QDs. For the ground state of magnetopolarons in QDs, the electron-LO phonon interaction plays a significant role, meanwhile, the Rashba spin-orbit coupling effect cannot be ignored. Only for the lower volocity of the electrons, can the polaron effect and the Rashba spin-orbit interaction effect on the magnetopolaron be obvious.
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Keywords:
- quantum disk /
- Rashba spin-orbit interaction /
- magnetopolaron /
- interaction energy
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[27] [28] Fai L C, Teboul V, Monteil A 2005 Condensed Matter Physics 8 639
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[52] Chakraborty T, Pietilinen P 2005 Phys. Rev. B 71 113305
[53] -
[1] Dou X M, Chang X Y, Sun B Q 2009 Appl. Phys. Lett. 95 221903
[2] [3] Yu Z, Guo Y, Zheng J, Chi F 2013 Chin. Phys. B 22 117303
[4] [5] Shen M, Bai Y K, An X T, Liu J J 2013 Chin. Phys. B 22 047101
[6] Huangfu Y F, Yan Z W 2008 Physica E 40 2982
[7] [8] Xiao W, Xiao J L 2007 Int. J. Mod. Phys. B 21 2007
[9] [10] Tang H Z, Zhai L X, Liu J J 2012 Chin. Phys. B 21 120303
[11] [12] Yang F, Zheng R. S 2007 Solid State Commun. 141 555
[13] [14] Li A X, Duan S Q 2012 Chin. Phys. B 21 117201
[15] [16] Rashba E I 2000 Phys. Rev. B 62 16267
[17] [18] Dresselhaus G 1955 Phys. Rev. 100 580
[19] [20] [21] Governale M 2002 Phys. Rev. Lett. 89 206802
[22] [23] Bandyopadhyay S 2000 Phys. Rev. B 61 13813
[24] Tsitsishvili E, Lozano G S, Gogolin A O 2004 Phys. Rev. B 70 115316
[25] [26] Tapash Chakraborty, Pekka Pietilainen 2005 Phys. Rev. B 71 113305
[27] [28] Fai L C, Teboul V, Monteil A 2005 Condensed Matter Physics 8 639
[29] [30] Liu J Xiao J L, Huo S F, Chen Z Y 2007 Commun. Theor. Phys. 48 930
[31] [32] Li Z X, Xiao J L, Wang H Y 2010 Modern Physics Letters B 24 2423
[33] [34] [35] Li Z X, Xiao J, Liu A H 2011 International Journal of Nanoscience 10 501
[36] Wang Q W, Hong L 2012 Acta Phys. Sin. 61 017107 (in Chinese)[王启文, 红兰 2012 61 017107]
[37] [38] Peeters F M, Schweigert V A 1996 Phys. Rev. B 53 1468
[39] [40] Price R, Zhu X, Sarma S D 1995 Phys. Rev. B 51 2017
[41] [42] [43] Lommer G, Malcher F, Rossler U 1988 Phys. Rev. Lett. 60 728
[44] [45] Sun Q F, Wang J, Guo H 2005 Phys. Rev. B 71 165310
[46] Voskoboynikov O, Lee C P, Tretyak O 2001 Phys. Rev. B 63 165306
[47] [48] Tokuda N 1980 J. Phys. C: Solid State Phys. 13 L851
[49] [50] [51] Lee T D, Low F M, Pines D 1953 Phys. Rev. 90 297
[52] Chakraborty T, Pietilinen P 2005 Phys. Rev. B 71 113305
[53]
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