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1996 Fiscal Year Final Research Report Summary

Study of Wannier-Stark Effect in GaAs/AlGaAs Superlattices

Research Project

Project/Area Number 07455140
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

HAMAGUCHI Chihiro  Osaka University, Dept.of Electronic Engineering, Professor, 工学部, 教授 (40029004)

Co-Investigator(Kenkyū-buntansha) MOMOSE Hideki  Osaka University, Low Temperature Center, Research Associate, 低温センター, 助手 (80260636)
MORIFUJI Masato  Osaka University, Dept.of Electronic Engineering, Research Associate, 工学部, 助手 (00230144)
MORI Nobuya  Osaka University, Dept.of Electronic Engineering, Lecturer, 工学部, 講師 (70239614)
TANIGUCHI Kenji  Osaka University, Dept.of Electronic Engineering, Professor, 工学部, 教授 (20192180)
Project Period (FY) 1995 – 1996
KeywordsSemiconductor Superlattice / Wannier-Stark Effect / Electroreflectance / Zener Tunneling / Interband Transition / GAMMA-X Crossover
Research Abstract

In order to clarify the existense of a new phenomenon called "Wannier-Stark resonance" which was predicted by Di Carlo et al., we measured Zener current throught a pin diode with a (GaAs) _5/ (AlAs) _2 superlattice in the intrinsic layr. The sample we used were grown by the group of professor Weimann in Munchen Institute of Technology. We measured the derivative signals of Zener current by employing a standard lock-in technique and observed several peaks in the second derivative of Zener current. The peak positions agree well with theoretical values. Electroreflectance measurements were also carried out so as to clarify electronic band structure of the superlattice. Observed electroreflectance spectra clearly show the formation of Stark-ladders in the superlattice. Energies of the Stark-ladders show good correspondence to the peak voltages of the second derivative of the Zener current. These results strongly indicates that the peaks in the second derivative of Zener current arise from Stark-ladders in the superlattice.
In conclusion, we found an experimental evidence for the Wannier-Stark resonances.

  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] C. Hamaguchi, M. Yamaguchi, H. Nagasawa, M. Morifuji 他: "Wannier-Stark Localization in Superlattices" Jpn. J. Appl. Phys.34. 4519-4521 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M. Morifuji and C. Hamaguchi: "Theoretical study on interband tunneling of holes through GaAs/AlAs/GaAs single-barrier hetero-structures" Phys. Rev. B. 52. 14131-14136 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. Nagasawa, K. Murayama, M. Yamaguchi, M. Morifuji 他: "Wannier-Stark Oscillations in Zener Tunneling Currents" Solid-State Electron.40. 245-247 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] C. Wirner, C. Hamaguchi, J. Smoliner 他: "Self-consistent Determination of the Confinement Potential in Various Etched Quantum Wire Structures" Jpn. J. Appl. Phys.34. 4458-4461 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A. Di Carlo, C. Hamaguchi, M. Yamaguchi 他: "Wannier-Srark Resonance in Semiconductor Transport : Theory and Experiment" Hot Carriers in Semiconductors. 143-146 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M. Morifuji, K. Taniguchi and C. Hamaguchi: "Interband Tunneling of Holes through Single-Barrier Nanostructures" Surface Science. 361/362. 201-204 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K. Yamanaka, H. Momose, N. Mori 他: "Angular Dependent Cyclotron Resonance in Short Period (GaAs)_n/(AlAs)_n Superlattices" Physica B. 227. 356-359 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. Nagasawa, K. Murayama, M. Morifuji 他: "Stark-ladder Transition in a (GaAs)_5/(AlAs)_2 Zener Tunneling Diode" Physica B. 227. 206-209 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K. Murayama, H. Nagasawa, S. Ozaki, M. Morifuji, C. Hamaguchi 他: "Wannier-Stark resonances in Zener tunneling diodes with GaAs/AlAs superlattcies" Superlattcies and Microstructures. 20. 493-498 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] C. Hamaguchi, M. Yamaguchi, H. Nagasawa 他: "Wannier-Stark States in Semiconductor Supelattices" Inst. Phys. Conf. Ser.145. 1181-1861 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] C.Hamaguchi, M.Yamaguchi, H.Nagasawa, M.Morifuji, A.Di Carlo, P.Vogl, G.Bohm, G.Trankle, G.Weimann, Y.Nishikawa and S.Muto: "Wannier-Stark Localization in Superlattices" Jpn.J.Appl.Phys.34 (August). 4519-4521 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Morifuji and C.Hamaguchi: "Theroretical study on interband tunneling of holes through GaAs/AlAs/GaAs single-barrier hetero-structures" Phys.Rev.B52 (November). 14131-14136 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Nagasawa, K.Murayama, M.Yamaguchi, M.Morifuji, C.Hamaguchi, A.Di Carlo, P.Vogl, G.Bohm, G.Trankle, and G.Weimann: "Wannier-Stark Oscillations in Zener Tunneling Currents" Solid-State Electron.40 (February). 245-247 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] C.Wirner, C.Hamaguchi, J.Smoliner, N.Reinacher and E.Gornik: "Self-consistent Determination of the Confinement Potential in Various Etched Quantum Wire Structures" Jpn.J.Appl.Phys.34 (August). 4458-4461 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Di Carlo, C.Hamaguchi, M.Yamaguchi, H.Nagasawa, M.Morifuji, P.Vogl, G.Bohm, G.Trankle, G.Weimann, Y.Nishikawa and S.Muto: "Wannier-Stark Resonance in Semiconductor Transport : Theory and Experiment" Hot Carriers in Semiconductors edited by K.Hess. 143-146 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Morifuji, K.Taniguchi and C.Hamaguchi: "Interband Tunneling of Holes through Single-Barrier Nanostructures" Surface Sicence. 361/362 (July). 201-204 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Yamanaka, H.Momose, N.Mori, C.Hamaguchi, H.Arimoto, Y.Imanaka, Y.Shimamoto and N.Miura: "Angular Dependent Cyclotron Resonance in Short Period (GaAs) _n/ (AlAs) _n Superlattices" Physica B. 227. 356-359 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Nagasawa, K.Murayama, M.Morifuji, A.Di Carlo, P.Vogl, G.Bohm, G.Trankle, G.Weimann, and C.Hamaguchi: "Stark-ladder Transition in a (GaAs) _5/ (AlAs) _2 Zener Tunneling Diode" Physica B. 227. 206-209 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Murayama, H.Nagasawa, S.Ozaki, M.Morifuji, C.Hamaguchi, A.Di Carlo, P.Vogl, G.Bohm and G.Weimann: "Wannier-Stark Resonances in Zener Tunneling Diodes with GaAs/AlAs Superlattices" Superlattices and Microstructures. 20. 493-498 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] C.Hamaguchi, M.Yamaguchi, H.Nagasawa, K.Murayama, M.Morifuji, A.Di Carlo, P.Vogl, G.Bohm, G.Trankle and G.Weimann: "Wannier-Stark States in Semiconductor Supelattices" Inst.Phys.Conf.Ser.145. 1181-1861 (1996)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-09  

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