Molecular dynamics studies of electron-hole bilayers

Z. Donkó, G. J. Kalman

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Citations (Scopus)

Abstract

We investigated the properties of strongly coupled classical electron hole bilayers, using a molecular dynamics simulation code based on the PPPM (particle-particle particle-mesh) algorithm and applying the transformation of the two layers into a single layer with modified interaction potentials. The calculations were carried out for layer separations d comparable to the Wigner-Seitz radius a. The analysis of the (intra- and interlayer) pair correlation functions g11(r) and g12(r) showed that at layer separations d/a ≥ 3 the layers are independent of each other. With decreasing d/a a strong increasing peak of g12 develops at r/a = 0, indicating the formation of electron-hole pairs ('classical excitons'). The intralayer correlation function g11 is essentially independent of the layer separation for d/a ≥ 1, the interaction of particles between the two layers does not influence the long range order (observed at high Γ values) in the layers. At d/a <1 the long range order is destroyed due to the fact that the interaction is due to the dipole field of the electron-hole pairs.

Original languageEnglish
Title of host publicationJournal De Physique. IV : JP
PublisherEditions de Physique
Volume10
Edition5
Publication statusPublished - Mar 2000
EventSccS99: The 1999 International Conference on Strongly Coupled Coulomb Systems - Saint-Malo, France
Duration: Sep 4 1999Sep 10 1999

Other

OtherSccS99: The 1999 International Conference on Strongly Coupled Coulomb Systems
CitySaint-Malo, France
Period9/4/999/10/99

Fingerprint

molecular dynamics
interactions
mesh
interlayers
excitons
dipoles
radii
simulation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Donkó, Z., & Kalman, G. J. (2000). Molecular dynamics studies of electron-hole bilayers. In Journal De Physique. IV : JP (5 ed., Vol. 10). Editions de Physique.

Molecular dynamics studies of electron-hole bilayers. / Donkó, Z.; Kalman, G. J.

Journal De Physique. IV : JP. Vol. 10 5. ed. Editions de Physique, 2000.

Research output: Chapter in Book/Report/Conference proceedingChapter

Donkó, Z & Kalman, GJ 2000, Molecular dynamics studies of electron-hole bilayers. in Journal De Physique. IV : JP. 5 edn, vol. 10, Editions de Physique, SccS99: The 1999 International Conference on Strongly Coupled Coulomb Systems, Saint-Malo, France, 9/4/99.
Donkó Z, Kalman GJ. Molecular dynamics studies of electron-hole bilayers. In Journal De Physique. IV : JP. 5 ed. Vol. 10. Editions de Physique. 2000
Donkó, Z. ; Kalman, G. J. / Molecular dynamics studies of electron-hole bilayers. Journal De Physique. IV : JP. Vol. 10 5. ed. Editions de Physique, 2000.
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