Experimental Resonant Two-Photon Study of the Lowest Confined Exciton Fine Structure in CuCl Quantum Dots

Abstract

Fine structure of low-energy confined exciton in CuCl spherical nanocrystals has been studied by a resonant size-selective two-photon-excited luminescence (TPL) spectroscopy with high spectral resolution. A band of resonance luminescence (RL) arising due to annihilation of the lowest-energy exciton and its LO-phonon replica were observed to be doublets. Analysis has shown that the components of the doublets connect wfth the pair of exciton states which have been attributed to low-energy confined states (1S) of two transversal excitons (T1 and T2) split by the size-dependent spin-orbit interaction. The physical reason of the splitting is similar to removing of Kramers degeneration of electron states in the bulk crystals of T(sub d) symmetry.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1998
Accession Number
ADP012768

Entities

People

  • A. V. Baranov
  • Alexey V. Fedorov
  • S. Yamauchi
  • Y. Masumoto

Organizations

  • University of Tsukuba

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Crystal Lattice Vibrations
  • Crystals
  • Electrons
  • Energy Bands
  • Excitation
  • Excitons
  • High Resolution
  • Linear Polarization
  • Luminescence
  • Nanocrystals
  • Phonons
  • Photons
  • Quantum Dots
  • Quantum Properties
  • Radiation
  • Spectra
  • Spin-Orbit Interaction

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.
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics
  • Quantum Computing
  • Space