Crystallization in mass-asymmetric electron-hole bilayers

Abstract

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.

10 pages, latex (styles files included)

References in corpus (2)

• Crystallization in two-component Coulomb systems
• Path-integral Monte Carlo simulations for interacting few-electron quantum dots with spin-orbit coupling

Cited by in corpus (3)

• Classical and quantum Coulomb crystals
• Structural transitions of finite spherical Yukawa crystals
• Possible effect of collective modes in zero magnetic field transport in an electron-hole bilayer