Current rectification through a single-barrier resonant tunneling quantum structure

G. Papp, M. Di Ventra, C. Coluzza, A. Baldereschi, G. Margaritondo

Research output: Contribution to journalArticle

7 Citations (Scopus)


We propose a simple quantum structure which exhibits resonant tunneling under one bias and simple tunneling under the opposite one, thus acting as a rectifier. The diode consists of a single laterally-indented barrier. Due to its particular conduction-band profile, electrons undergo resonant tunneling when the bias creates a band-profile triangular well which can contain a resonant state aligned to the emitter Fermi energy. A diode with an active layer of ≈ 100 angstrom, realized by AlGaAs/GaAs, has a Rectification Ratio, calculated at the current-peak bias at resonance, of ≈ 100. This value can be enhanced by putting in series several elements of this kind.

Original languageEnglish
Pages (from-to)273-275
Number of pages3
JournalSuperlattices and Microstructures
Issue number3
Publication statusPublished - Jan 1 1995


ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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