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Keywords:

  • Quantum well;
  • Wigner crystal;
  • Electron-electron interaction

Abstract

In this paper, the effect of finite width on ground-state properties of a spin-polarized symmetric electron-hole quantum bilayers (EHBL) system is investigated at zero temperature. The quantum self-consistent mean-field approximation of Singwi, Tosi, Land and Sjölander (qSTLS) is adopted to explore intra- and interlayer properties such as the pair-correlation function, the static density susceptibility, the local-field corrections and the ground-state energy. Interestingly, we noticed that due to the inclusion of finite width, the critical density for the onset of Wigner crystal (WC) phase is now lowered as compared to the recent spin-polarized EHBL system without finite width and unpolarized EHBL system with finite width. Further, spin-polarization effect is seem to introduce a marked change in the ground-state energy of EHBL system as compared to that of unpolarized system. Results of ground-state energy are also compared with the recent EHBL system without finite width (© 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)