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Stationary states and phase diagram for a model of the Gunn effect under realistic boundary conditions

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  • Additional Information
    • Contributors:
      Universitat de Barcelona; Universitat Politècnica de Catalunya. Departament de Física Aplicada; Universitat Politècnica de Catalunya. NOLIN - Física No-Lineal i Sistemes Fora de l'Equilibri
    • Publication Information:
      Preprint
    • Publication Information:
      American Physical Society (APS), 1997.
    • Publication Date:
      1997
    • Abstract:
      A general formulation of boundary conditions for semiconductor-metal contacts follows from a phenomenological procedure sketched here. The resulting boundary conditions, which incorporate only physically well-defined parameters, are used to study the classical unipolar drift-diffusion model for the Gunn effect. The analysis of its stationary solutions reveals the presence of bistability and hysteresis for a certain range of contact parameters. Several types of Gunn effect are predicted to occur in the model, when no stable stationary solution exists, depending on the value of the parameters of the injecting contact appearing in the boundary condition. In this way, the critical role played by contacts in the Gunn effect is clearly stablished.
      10 pages, 6 Post-Script figures
    • File Description:
      application/pdf
    • ISSN:
      1095-3787
      1063-651X
    • Accession Number:
      10.1103/physreve.56.1490
    • Accession Number:
      10.48550/arxiv.cond-mat/9705262
    • Rights:
      APS Licenses for Journal Article Re-use
      CC 0
      arXiv Non-Exclusive Distribution
    • Accession Number:
      edsair.doi.dedup.....2a82bfd963ec4c2219e761b5e213b26d