Resonant coupling between Stark-ladder states in GaAs/AlGaAs superlattice

M. Yamaguchi, M. Morifuji, H. Kubo, K. Taniguchi, C. Hamaguchi, C. Gmachl, E. Gornik

Research output: Contribution to journalArticlepeer-review


We carried out electroreflectance measurements in a GaAs/AlGaAs superlattice at 77K in order to investigate the resonant couplings between the Stark-ladder states. The experimental data are analyzed by using tight-binding theory, including the electric field effect. From the comparison between the theoretical calculations and experimental results, the resonant couplings are found to occur between Stark-ladder states of the heavy-hole minibands. The observed transition energies of the resonant couplings do not cross each other, and the tight-binding calculations also indicate that the splittings of the energy levels are induced by the resonant couplings. PACS: 7865, 7820J.

Original languageEnglish (US)
Pages (from-to)283
Number of pages1
JournalSuperlattices and Microstructures
Issue number4
StatePublished - Dec 1993
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


  • GaAs/AlGaAs superlattice
  • Resonant coupling
  • Stark-ladder


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