Vortices and vortical structures in systems with pairing of spatially separated electrons and holes

Excited State Effects in the Dielectric Function of a 2D Boson System

“…Later, Lozovik and Yudson [4], and independently Shevchenko [5], analyzed the effect of interband transitions on the current states for the same system, as well as the electron±phonon interaction and the scattering by impurities. More recently, Shevchenko has discussed the properties of vortices in this type of system [6]. Similarly, Dzyubenko and co-authors have also studied the excitonic states in similar geometries in the presence of strong magnetic fields [7].…”

Confinement of magnetoexcitons in GaAs quantum well with a superconducting disk on top of the well

“…Since the pioneering works of Gor'kov and Dzyaloshinskii [1] for a bulk case, and of Lerner and Lozovik [2] for a two-dimensional case, the magnetoexcitons have been subject to numerous studies focus on theoretical and experimental research motivated by the continued activities to produce a BoseEinstein condensate of excitons in a magnetic field in quantum wells [3][4][5][6][7][8]. In quantum wells the electron and hole motions along the z-direction (throughout this paper, we take x,y-plane to be the plane of confinement of the two-dimensional electron-hole system) are quantized into discrete levels due to the presence of a confinement potential along this direction.…”

Diamagnetism and flux creep in bilayer exciton superfluids

“…This discrepancy corresponds to that between the moments of inertia of normal and superfluid helium inferred in a torsional oscillator experiment. The in-plane magnetic susceptibility of the exciton condensate has previously been considered 6,[24][25][26] in clean bilayers. However, there are very good reasons to expect [27][28][29][30] that disorder is essential for understanding the observed transport properties of the bilayer at low temperatures.…”