Crossovers of the Density of States in Two-Direction Double-Barrier Resonant-Tunneling Structures

Abstract

The density of states in delta profiled 2D and 1D quantum systems is calculated. It is shown that there are smooth crossovers in the density of states from a 3D square-root behavior to a 2D steplike behavior, and from a 2D to a 1D sawtooth-like behavior, as the confinements increase. Quantum well structures are being extensively studied for applications in ultra large scale integrated circuits and high-speed optoelectronics. As for these systems, the lateral confinement of originally quasi two dimensional (Q2D) electron layers to submicron dimensions has made possible the realization of quasi-one-dimensional (Q1D) electron systems. Among them, resonant tunneling structures are of great interest not only because of their potential applications, but also for the underlying basic physics.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1992
Accession Number
ADA246124

Entities

People

  • C. I. Um
  • J. J. Ko
  • N. H. Shin
  • Stephanie J. Lee
  • Thomas F. George

Organizations

  • Washington State University

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Chemistry
  • Classification
  • Electrons
  • Equations
  • Free Electrons
  • Integrated Circuits
  • Large Scale Integrated Circuits
  • Military Research
  • Numbers
  • Physics
  • Quantum Wells
  • Quantum Wires
  • Security
  • Square Roots
  • Two Dimensional
  • Universities

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Microelectronics
  • Quantum Computing