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arXiv · 1106.1777

Superfluidity of electron-hole pairs in randomly inhomogeneous bilayer systems

A. I. Bezuglyj·S. I. Shevchenko
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Abstract

In bilayer systems electron-hole (e-h) pairs with spatially separated components (i.e., with electrons in one layer and holes in the other) can be condensed to a superfluid state when the temperature is lowered. This article deals with the influence of randomly distributed inhomogeneities on the superfluid properties of such bilayer systems in a strong perpendicular magnetic field. Ionized impurities and roughenings of the conducting layers are shown to decrease the superfluid current density of the e-h pairs. When the interlayer distance is smaller than or close to the magnetic length, the fluctuations of the interlayer distance considerably reduce the superfluid transition temperature.

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A. I. Bezuglyj, S. I. Shevchenko. 2011-06-09. Superfluidity of electron-hole pairs in randomly inhomogeneous bilayer systems. https://doi.org/10.1063/1.3638141

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