Crystallization in mass-asymmetric electron-hole bilayers

Details Crystallization in mass-asymmetric electron-hole bilayers Crystallization in mass-asymmetric electron-hole bilayers

2006-11-21

arxiv.org/abs/cond-mat/0611556v1

Contrib. Plasma Phys. 47, 335-344 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, latex (styles files included)

Scientific paper

10.1002/ctpp.200710045

We consider a \textit{mass-asymmetric} electron and hole bilayer. Electron and hole Coulomb correlations and electron and hole quantum effects are treated on first princles by path integral Monte Carlo methods. For a fixed layer separation we vary the mass ratio $M$ of holes and electrons between 1 and 100 and analyze the structural changes in the system. While, for the chosen density, the electrons are in a nearly homogeneous state, the hole arrangement changes from homogeneous to localized, with increasing $M$ which is verified for both, mesoscopic bilayers in a parabolic trap and for a macroscopic system.

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