Graphene bilayer structures with superfluid magnetoexcitons |
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Authors: | Alexandr A Pikalov Dmitrii V Fil |
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Affiliation: | 1.Institute for Single Crystals, National Academy of Sciences of Ukraine, Lenin ave. 60, Kharkov 61001, Ukraine |
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Abstract: | In this article, we study superfluid behavior of a gas of spatially indirect magnetoexcitons with reference to a system of two graphene layers embedded in a multilayer dielectric structure. The system is considered as an alternative of a double quantum well in a GaAs heterostructure. We determine a range of parameters (interlayer distance, dielectric constant, magnetic field, and gate voltage) where magnetoexciton superfluidity can be achieved. Temperature of superfluid transition is computed. A reduction of critical parameters caused by impurities is evaluated and critical impurity concentration is determined. |
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Keywords: | graphene exciton superfluidity multilayer heterostructures |
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