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Metastable bound state of a pair of two-dimensional spatially separated electrons in anti-parallel magnetic fields

S. I. Shevchenko·E. D. Vol
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Abstract

We propose a new mechanism for binding of two equally charged carriers in a double-layer system subjected by a magnetic field of a special form. A field configuration for which the magnetic fields in adjacent layers are equal in magnitude and opposite in direction is considered. In such a field an additional integral of motion - the momentum of the pair P arises. For the case when in one layer the carrier is in the zero (n=0) Landau level while in the other layer - in the first (n=1) Landau level the dependence of the energy of the pair on its momentum E(P} is found. This dependence turns out to be nonmonotonic one : a local maximum and a local minimum appears, indicating the emergence of a metastable bound state of two carrier with the same sign of electrical charge.

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S. I. Shevchenko, E. D. Vol. 2003-04-01. Metastable bound state of a pair of two-dimensional spatially separated electrons in anti-parallel magnetic fields. https://doi.org/10.1088/0953-8984%2F15%2F49%2F021

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