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Longitudinal Magnetophonon Resonances in Semiconductor Superlattices

Research Project

Project/Area Number 13650344
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Electronic materials/Electric materials
Research InstitutionOsaka University

Principal Investigator

MORI Nobuya  Osaka University Graduate School of Engineering Associated Professor, 大学院・工学研究科, 助教授 (70239614)

Co-Investigator(Kenkyū-buntansha) EAVES Laurence  Nottingham University School of Physics and Astronomy Professor, 物理天文学部, 教授
MORIFUJI Masato  Osaka University Graduate School of Engineering Research Associate, 大学院・工学研究科, 助手 (00230144)
Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2002: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2001: ¥2,800,000 (Direct Cost: ¥2,800,000)
Keywordssuperlattice / magnetophonon resonance / electron-phonon interaction / miniband transport / Wannier-Stark localization / nonequilibrium Green's function / Monte Carlo method / magnetotransport / 低次元電子系 / 化合物半導体
Research Abstract

The presence of a quantizing magnetic field strongly modifies the electronic properties of semiconductor superlattices (SLs). When a strong magnetic field is applied normal to the heterointerfaces and parallel to the electric field (the longitudinal configuration), transport becomes quasi-one-dimensional (Q1D). Provided the Landau level miniband (LLMB) is well resolved, resonant scattering of longitudinal optical (LO) phonons gives rise to the magnetophonon resonance (MPR). We performed ensemble Monte Carlo simulations of the electron motion in a Landau-quantized GaAs/AlAs superlattice at high temperatures, taking account of various optical-phonon modes, to investigate effects of multi-mode behavior of optical-phonons. We find that a strong drift-velocity enhancement occurs under the cyclical phonon emission and absorption condition as predicted by Dalton et al.
Electronic states and transport properties of a quasi-one-dimensional system in Landau-quantized superlattices are investigated using the nonequilibrium Green's function technique developed by Wacker and co-workers [A. Wacker, Phys. Rep., 357, 1 (2002)]. The quantum results are compared with the respective results obtained from Monte Carlo simulation of Boltzmann's transport equation. Our calculation focuses on the form of the velocity-electric-field curve in the region of increasing Wannier-Stark (WS) localization. We find that the current flow is strongly modulated by a subtle interplay of Stark cyclotron resonance (SCR) and optical phonon resonance (OPR).

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] N Mori, C Hamaguchi, L Eaves, PC Main: "Numerical studies of miniband conduction in quasi-one-dimensional superlattices"VLSI Design. 13. 45-50 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] A Patane, RJA Hill, L Eaves, PC Main, M Henini, M.L Zambrano, A Levin, N Mori, 他: "Probing the quantum states of self-assembled InAs dots by magnetotunneling spectroscopy"Physical Review B. 65. 165308 1-165308 12 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N Mori, C Hamaguchi, L Eaves, PC Main: "Temperature dependence of the conductance in quasi-one-dimensional superlattices"Microelectronic Engineering. 63. 87-90 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N Mori, C Hamaguchi, A Patane, L Eaves, PC Main: "Magneto-tunneling spectroscopy of quantum structures"Microelectronic Engineering. 63. 109-114 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N Mori, C Hamaguchi, L Eaves, PC Main: "Phonon cycling in GaAs/AlAs superlattices"Proceedings of the 26th International Conference on the Physics of Semiconductors. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N Mori, C Hamaguchi, A Patane, L Eaves, PC Main: "Nonequilibrium Green's function method applied to Landau-quantized superlattices"Proceedings of the 15th International Conference on High Magnetic Fields in Semiconductor Physics. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N Mori, C Hamaguchi, L Eaves, and PC Main: "Numerical studies of miniband conduction in quasi-one-dimensional superlattices"VLSI Design. 13. 45-50 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] A Patane, RJA Hill, L Eaves, PC Main, M Henini, M.L Zambrano, A Levin, N Mori, et al.: "Probing the quantum states of self-assembled InAs dots by magnetotunneling spectroscopy"Physical Review B. 65. 165308(1-12) (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N Mori, C Hamaguchi, L Eaves, and PC Main: "Temperature dependence of the conductance in quasi-one-dimensional superlattices"Microelectronic Engineering. 63. 87-90 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N Mori, C Hamaguchi, A Patane, L Eaves, and PC Main: "Magneto-tunneling spectroscopy of quan-turn structures"Microelectronic Engineering. 63. 109-114 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N Mori, C Hamaguchi, L Eaves and PC Main: "Phonon cycling in GaAs/AlAs superlattices"Proceedings of the 26th International Conference on the Physics of Semiconductors. in print.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N Mori, C Hamaguchi, A Patane, L Eaves and PC Main: "Nonequilibrium Green's function method applied to Landau-quantized superlattices"Proceedings of the 15th International Conference on High Magnetic Fields in Semiconductor Physics. in print.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N.Mori, C.Hamaguchi, L.Eaves, P.C.Main: "Temperature dependence of the conductance in quasi-one-dimensional superlattices"Microelectronic Engineering. 63. 87-90 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] N Mori, C Hamaguchi, L.Eaves, P.C. Main: "Phonon cycling in GaAs/AlAs superlattices"Proceedings of the 26th International Conference on the Physics of Semiconductors. (印刷中).

    • Related Report
      2002 Annual Research Report
  • [Publications] N Mori, C Hamaguchi, A Patane, L.Eaves, P.C.Main: "Nonequilibrium Green's function method applied to Landau-quantized superlattices"Proceedings of the 15th International Conference on High Magnetic Fields in Semiconductor Physics. (印刷中).

    • Related Report
      2002 Annual Research Report
  • [Publications] N.Mori, C.Hamaguchi, L.Eaves, P.C.Main: "Monte Carlo simulation of miniband conduction in Landau-quantized superlattices"Physica B. 298. 329-332 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] N.Mori, C.Hamaguchi, L.Eaves, P.C.Main: "Numerical studies of miniband conduction in quasi-one-dimensional superlattices"VLSI Design. 13. 45-50 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] N.Mori, C.Hamaguchi, L.Eaves, P.C.Main: "Temperature dependence of the conductance in quasi-one-dimensional superlattices"Microelectronic Engineering. (発表予定).

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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