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Title: Influence of the Wavefunction Distribution on Exciton Dissociation in Electric Field

Abstract

We show that the dissociation threshold of an exciton, a bound electron-hole pair, by an electric field is mainly determined by its energy: as expected, the dissociation voltage decreases with increasing exciton energy. However, within the multiplet of states belonging to a particular principal quantum number n, the dissociation voltage rises with increasing state energy, in contrast to the expectations based on energy arguments. This behavior is demonstrated for the yellow exciton states of Cu{sub 2}O and is attributed to the distribution of the wavefunction in the potential landscape, where the lower (higher) lying state in the multiplet is shifted away (towards) the tunnel barrier.

Authors:
; ; ; ;  [1]; ;  [2]
  1. Technische Universität Dortmund, Experimentelle Physik 2 (Germany)
  2. Ioffe Institute (Russian Federation)
Publication Date:
OSTI Identifier:
22771062
Resource Type:
Journal Article
Journal Name:
Physics of the Solid State
Additional Journal Information:
Journal Volume: 60; Journal Issue: 8; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7834
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COPPER OXIDES; DIFFUSION BARRIERS; DISSOCIATION; DISTRIBUTION; ELECTRIC FIELDS; ENERGY LEVELS; EXCITONS; MULTIPLETS; QUANTUM NUMBERS; TUNNEL EFFECT; WAVE FUNCTIONS

Citation Formats

Heckötter, J., Freitag, M., Fröhlich, D., Aßmann, M., Bayer, M., Semina, M. A., and Glazov, M. M., E-mail: glazov@coherent.ioffe.ru. Influence of the Wavefunction Distribution on Exciton Dissociation in Electric Field. United States: N. p., 2018. Web. doi:10.1134/S1063783418080115.
Heckötter, J., Freitag, M., Fröhlich, D., Aßmann, M., Bayer, M., Semina, M. A., & Glazov, M. M., E-mail: glazov@coherent.ioffe.ru. Influence of the Wavefunction Distribution on Exciton Dissociation in Electric Field. United States. doi:10.1134/S1063783418080115.
Heckötter, J., Freitag, M., Fröhlich, D., Aßmann, M., Bayer, M., Semina, M. A., and Glazov, M. M., E-mail: glazov@coherent.ioffe.ru. Wed . "Influence of the Wavefunction Distribution on Exciton Dissociation in Electric Field". United States. doi:10.1134/S1063783418080115.
@article{osti_22771062,
title = {Influence of the Wavefunction Distribution on Exciton Dissociation in Electric Field},
author = {Heckötter, J. and Freitag, M. and Fröhlich, D. and Aßmann, M. and Bayer, M. and Semina, M. A. and Glazov, M. M., E-mail: glazov@coherent.ioffe.ru},
abstractNote = {We show that the dissociation threshold of an exciton, a bound electron-hole pair, by an electric field is mainly determined by its energy: as expected, the dissociation voltage decreases with increasing exciton energy. However, within the multiplet of states belonging to a particular principal quantum number n, the dissociation voltage rises with increasing state energy, in contrast to the expectations based on energy arguments. This behavior is demonstrated for the yellow exciton states of Cu{sub 2}O and is attributed to the distribution of the wavefunction in the potential landscape, where the lower (higher) lying state in the multiplet is shifted away (towards) the tunnel barrier.},
doi = {10.1134/S1063783418080115},
journal = {Physics of the Solid State},
issn = {1063-7834},
number = 8,
volume = 60,
place = {United States},
year = {2018},
month = {8}
}