Recently, it has been demonstrated that the absorption of moderately doped two-
dimensional semiconductors can be described in terms of exciton polarons. In this scenario …

The emission and absorption spectra of quantum wells containing electron or hole gas are
reviewed. We show that trions, also known as charged excitons, play a dominant role in …

A simple method is used to calculate the binding energies of negatively and positively
charged excitons (trions) in an ideal two-dimensional electron-hole system. The binding …

We calculate, to high accuracy, the states of the quantum-well negatively charged exciton X−
in a perpendicular magnetic field. Two GaAs structures are considered: a 100-Å “narrow” …

The strong-coupling phase diagram of magic-angle twisted bilayer graphene (TBG) predicts
a series of exact one-particle charge±1 gapped excitations on top of the integer-filled …

We report on a study of the charged-Skyrmion or spin-texture excitations which occur in
quantum Hall ferromagnets near odd Landau-level filling factors. Particle-hole symmetry is …

A theory of charged excitons X− in a dilute two-dimensional (2D) electron gas in a high-
magnetic field is presented. In contrast to previous calculations, three bound X− states (one …

We study the photoluminescence spectrum of a low-density (ν< 1) two-dimensional electron
gas at high magnetic fields and low temperatures. We find that the spectrum in the fractional …

In previous work, we have argued that the optical properties of moderately doped two-
dimensional semiconductors can be described in terms of excitons dressed by their …

Abstract Spielman et al.[Phys. Rev. Lett. 84, 5808 (2000] recently observed a large and
sharp Josephson-like zero-bias peak in the tunnel conductance of a bilayer system in a …