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Effects of confined longitudinal and interface optical phonons on excitons in an asymmetric quantum well

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Abstract

The interaction between exciton and confined longitudinal optical (LO) phonons, interface optical (IO) phonons in an asymmetric Ga1−x Al x As/GaAs/Ga0.7Al0.3As square quantum well is investigated. By applying the LLP-like transformation and variational approach, the numerical results are obtained as functions of the well width and asymmetric-degree of well. The exciton-optical phonons interaction-energy has a minimum value with the increase of the well width. It is demonstrated that the LO-phonon energy-contribution increases while the IO-phonon contribution decreases as the well width increases gradually. The energy-contribution of LO-phonon in symmetric and asymmetric square quantum well does not have too much difference, but the IO-phonon contribution varies apparently. The exciton binding-energy monotonically decreases with the increase of the well width and is proportional to the left-barrier height.

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References

  1. Haken H. Exciton in a polar crystal. Nuovo Cimento, 1956, 10: 1230

    Google Scholar 

  2. Comas F, Studart N. Electron-phonon interaction in quantum-dot/quantum-well semiconductor heterostructures. Phys Rev B, 2004, 69: 235321

    Article  ADS  Google Scholar 

  3. Vartanian A L, Asatryan A L, Kirakosyan A A. The polaronic shift of exciton binding energy in quantum dots with a degenerate valence band. J Phys-Condes Matter, 2002, 14: 13357–13365

    Article  ADS  Google Scholar 

  4. Sagar D M, Cooney R R, Sewall S L, et al. Size dependent, state-resolved studies of exciton-phonon couplings in strongly confined semiconductor quantum dots. Phys Rev B, 2008, 77: 235321

    Article  ADS  Google Scholar 

  5. Frecke H, Wellein G, Loos J, et al. Localized polarons and doorway vibrons in finite quantum structures. Phys Rev B, 2008, 77: 085117

    Article  ADS  Google Scholar 

  6. Senger R T, Bajaj K K. Optical properties of confined polaronic excitons in a spherical ionic quantum dots. Phys Rev B, 2003, 68: 045313

    Article  ADS  Google Scholar 

  7. Tripathy S, Wagner H P. Coherent exciton-LO-phonon polarons in ZnSe quantum well with strong confinement. Phys Rev B, 2007, 75: 245316

    Article  ADS  Google Scholar 

  8. Matos-Abiague A. Polaron effect in GaAs-Ga1−x AlxAs quantum well: A fractional-dimension space approach. Phys Rev B, 2002, 65: 165321

    Article  ADS  Google Scholar 

  9. Oshiro K, Akai K, Matsuura M. Exciton-optical phonon interaction in a spherical quantum dot embedded in nonpolar matrix. Phys Rev B, 2002, 66: 153308

    Article  ADS  Google Scholar 

  10. Gerlach B, Wusthoff J, Smondyrev M A. Ground-state energy of exciton-( LO) phonon system in a parabolic quantum well. Phys Rev B, 1999, 60: 16569–16283

    Article  ADS  Google Scholar 

  11. Guo Z Z, Liang X X, Ban B L. Pressure-induced increase of exciton-LO-phonon coupling in a ZnCdSe/ZnSe quantum well. Phys Status Solidi B-Basic Solid State Phys, 2003, 238: 173–179

    Article  ADS  Google Scholar 

  12. Brancus D E N, Ion L. Full optical phonon spectrum and Frohlich Hamiltonian in wurtzite-type free-standing quantum well. Phys Rev B, 2007, 76: 155304

    Article  ADS  Google Scholar 

  13. Wang Z P, Liang X X, Wang X. Polaron effects on excitons in parabolic quantum wells: Fractional-dimension variational approach. Eur Phys J B, 2007, 59(1): 41–46

    Article  ADS  Google Scholar 

  14. Sakiroglu S, Dogan U, Yildiz A, et al. Ground state energy of excitons in quantum dot treated variationally via Hylleraas-like wave-function. Chin Phys B, 2009, 18: 1578–1585

    Article  ADS  Google Scholar 

  15. Wang Z P, Liang X X. Polaron energy and effective mass in parabolic quantum well. Chin Phys Lett, 2005, 22: 2367–2370

    Article  ADS  Google Scholar 

  16. Zhao F Q, Liang X X. Polaron with spatially dependent mass in a finite parabolic quantum well. Chin Phys Lett, 2002, 19: 974–976

    Article  MathSciNet  ADS  Google Scholar 

  17. Zheng R S, Matsuura M. Exciton-phonon interaction effects in quantum wells. Phys Rev B, 1997, 56: 2058–2061

    Article  ADS  Google Scholar 

  18. Shi J J, Sanders B C, Pan S H, et al. Optical-phonon and electron-phonon interaction in arbitrary semiconductor planar microcavities. Phys Rev B, 1999, 60: 16031–16038

    Article  ADS  Google Scholar 

  19. Zheng R S, Ban S L, Liang X X. Effects of interface and bulk optical phonons on polarons in a quantum well. Phys Rev B, 1994, 49: 1796–1801

    Article  ADS  Google Scholar 

  20. Chen R, Lin L, George T F, et al. Optical-phonon modes in a double heterostructure of polar crystals. Phys Rev B, 1990, 41: 1435–1442

    Article  ADS  Google Scholar 

  21. Shi J J. Polar optical oscillations in coupled quantum well: The electron-phonon interaction and scattering. J Appl Phys, 1996, 80: 3863–3875

    Article  ADS  Google Scholar 

  22. Zheng RS, Matsuura M. Exciton binding energies in polar quantum wells with finite potential barriers. Phys Rev B, 1998, 58: 10769–10777

    Article  ADS  Google Scholar 

  23. Zheng RS, Matsuura M. Polaronic effects on excitons in quantum wells. Phys Rev B, 1998, 57: 1749–1761

    Article  ADS  Google Scholar 

  24. Deng Y P, Lv B B, Tian Q. Excitons and effects of phonons on excitons in inasymmetric square quantum well (in Chinese). Acta Phys Sin, 2010, 59: 4961–4966

    Google Scholar 

  25. Liang X X, Wang X. Electron-phonon interaction in quantum well. Phys Rev B, 1991, 43: 5155–5158

    Article  ADS  Google Scholar 

  26. Shi J J, Pan S H. Electron-interface-phonon interaction and scattering in asymmetric semiconductor quantum-well structures. Phys Rev B, 1995, 51: 17681–17688

    Article  ADS  Google Scholar 

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Authors and Affiliations

  1. Department of Physics, Beijing Normal University, Beijing, 100875, China

    YanPing Deng & Qiang Tian

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  1. YanPing Deng
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  2. Qiang Tian
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Correspondence to YanPing Deng.

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Deng, Y., Tian, Q. Effects of confined longitudinal and interface optical phonons on excitons in an asymmetric quantum well. Sci. China Phys. Mech. Astron. 54, 1593 (2011). https://doi.org/10.1007/s11433-011-4410-1

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