The monolayers of semiconducting transition metal dichalcogenides host strongly bound excitonic complexes and are an excellent platform for exploring many-body physics. Here we demonstrate a controlled kinetic manipulation the five-particle complex, charged biexciton, through systematic dependence biexciton peak on excitation power, gate voltage, temperature using steady-state time-resolved pho...

We theoretically demonstrate the formation of multiple bi-stability regions in the temperature pattern on the interface between a cuprous oxide quantum well and DCM2:CA:PS organic compound. The Frenkel molecular exciton of the DCM2 is brought into resonance with the 1S quadrupole Wannier-Mott exciton in the cuprous oxide by ”solvatochromism” with CA. The resulting hybrid is thermalized with sur...

We calculate the spectrum of elementary excitations in a two-dimensional exciton condensate in the vicinity of a two-dimensional electron gas. We show that attraction of excitons due to their scattering with free electrons may lead to formation of a roton minimum. The energy of this minimum may go below the ground state energy which manifests breaking of the superfluidity. The Berezinsky-Koster...

following our previous presentation of a new three-fold symmetry for derivation of the magic numbers of nuclei based upon a quark state model of nuclei, here the nuclear binding energy is obtained from such new perspective. from this point of view, since each nucleon is made of three quarks, the binding energy of nuclei contains a volume term proportional to 3a (a is mass number). by considerin...

in this paper, using monte carlo fortran code, we have obtained the binding energies for three different systems of diquark–antidiquark in distances from 0.01 to 15 nm. in [0.1 - 15] nm interval, we made use of coulomb potential because in this interval, strong interaction is negligible. we have compared the binding energies of the systems with one another. the results of these comparisons were...

In the current work, we study intense laser pulse influences on behaviors of first excitonic transition in a core/shell quantum dot submitted to an electric field. Therefore, exciton binding energy and mean distance between correlated electron–hole pair are discussed, considering field strength. Our calculations show that both external fields play significant repulsive effects. Through their ef...

Phonon sideband optical spectroscopy determines the energy of the dark K-momentum exciton for (6,5) carbon nanotubes. One-phonon sidebands appear in absorption and emission, split by two zone-boundary (K-point) phonons. Their average energy locates the E11 K-momentum exciton 36 meV above the E11 bright level, higher than available theoretical estimates. A model for exciton-phonon coupling shows...

This theoretical study is devoted to the effects of pressure and temperature on optoelectronic properties assigned first lowest transition (D+,X) excitonic complex (exciton-ionized donor) inside a single AlAs/GaAs/AlAs spherical quantum dot. Calculations are performed within effective mass approximation theory using variational method. Optical absorption refractive index as function degree conf...

We report on shakeup processes in the luminescence spectra of a negatively charged exciton (X) at moderate magnetic fields. These processes manifest themselves as a series of low-energy satellite peaks emerging from the negatively charged exciton line. We analyze the dependence of the X energy on magnetic field. We conclude that at magnetic fields above ;1 T the X structure can be viewed as an ...

The Mott transition from a dipolar excitonic liquid to an electron-hole plasma is demonstrated in wide GaN/(Al,Ga)N quantum well at $T=7$K by means of spatially-resolved magneto-photoluminescence spectroscopy. Increasing optical excitation density we drive the system state, characterized diamagnetic behavior and thus quadratic energy dependence on magnetic field, unbound linear shift emission w...