A method of measuring the contribution of the image potential energy of the shallow impurity ground state in a quantum well

Tzong Jer Yang*, Shih-ying Hsu

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

We show that the binding energy of the shallow impurity (at the center of the quantum well) ground state is strongly reduced by the presence of a metallic mirror at a few effective Bohr radii from the quantum well. For a given depth of the quantum well, we find that the absolute value of the image potential energy without the metallic mirror is equal to that with a fixed metallic mirror while a certain width of the quantum well is met. Hence, it is proposed that the binding energy of the shallow impurity ground state in the quantum well with and without the metallic mirror can be separately measured by the variation of the width of quantum well. The contribution of the image potential energy to the binding energy of the shallow impurity ground state may then be deduced.

Original languageEnglish
Article number978
Pages (from-to)186-189
Number of pages4
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume11
Issue number2-3
DOIs
StatePublished - 1 Jan 2001

Keywords

  • Image potential energy
  • Metallic mirror
  • Quantum well
  • Shallow impurity

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