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Appl. Phys. Lett. 96, 263510 (2010); http://dx.doi.org/10.1063/1.3458832 (3 pages)

Wigner crystallization due to electrons localized at deep traps in two-dimensional amorphous dielectric

S. S. Shaimeev1, V. A. Gritsenko1, and Hei Wong2

1Institute of Semiconductor Physics, 630090 Novosibirsk, Russia
2Department of Electronic Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong

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(Received 9 April 2010; accepted 9 June 2010; published online 30 June 2010)

We calculated the spatial distribution of electrons localized at deep neutral traps in some amorphous dielectric films based on some fundamental physics in order to explain the phenomena such as space ordering of electrons. We showed that when the surface density of traps (Ns) is much larger than that of the trapped electrons (ns), e.g., ns/Ns ≤ 0.001, Wigner crystallization occurs due to the Coulomb repulsion of trapped electrons and a two-dimensional quasiperiodic hexagonal lattice or Wigner glass can be formed.

© 2010 American Institute of Physics

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KEYWORDS and PACS

PACS

  • 71.55.Jv

    Disordered structures; amorphous and glassy solids

  • 73.50.Gr

    Charge carriers: generation, recombination, lifetime, trapping, mean free paths

  • 77.55.-g

    Dielectric thin films

ARTICLE DATA

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

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