Measurement of High Mobilities and Strain Confinement of Long-Lived Free Excitions in CU2O.

Abstract

One of the long range goals of this project has been to produce a photoexcited exciton system which displays quantum statistics. A method is made to produce excitons in a superconducting or superfluid state. One of the prime difficulties in achieving this goal is that excitons in direct gap semiconductors generally have very short lifetimes, of order 1 nanosecond, which is not long enough to permit their kinetic energies to come into equilibrium with the lattice temperature. On the other hand, the direct gap semiconductor exhibits excitons with very small Bohr radii advantageous to observing quantum statistics. to circumvent the lifetime problem stated above, high purity crystals of Cu20, which recently were shown to display excitonic lifetimes in the microsecond range. Have been studied.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 10, 1983
Accession Number
ADA128486

Entities

People

  • James P. Wolfe

Organizations

  • University of Illinois Urbana–Champaign

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Classification
  • Crystal Lattices
  • Crystal Structure
  • Dye Lasers
  • Illinois
  • Lasers
  • Liquid Dye Lasers
  • Liquid Lasers
  • Materials
  • Measurement
  • Mobility
  • Physics
  • Quantum Statistical Mechanics
  • Scientific Research
  • Semiconductors

Fields of Study

  • Physics

Readers

  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Systems Analysis and Design

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene
  • Quantum Computing