Antiferromagnetic materials could represent the future of spintronic applications thanks to
the numerous interesting features they combine: they are robust against perturbation due to …

An exciton is the particle-like entity that forms when an electron is bound to a positively
charged 'hole'. An ordered electronic state in which excitons condense into a single …

Excitonic insulators (EIs) arise from the formation of bound electron–hole pairs (excitons), in
semiconductors and provide a solid-state platform for quantum many-boson physics …

Two-dimensional moiré materials provide a highly controllable solid-state platform for
studies of quantum phenomena,–. To date, experimental studies have focused on correlated …

Bose condensation has shaped our understanding of macroscopic quantum phenomena,
having been realized in superconductors, atomic gases, and liquid helium. Excitons are …

An unambiguous observation of the Bose-Einstein condensation (BEC) of excitons in a
photoexcited bulk semiconductor and elucidation of its inherent nature have been …

An exciton, a two-body composite quasiparticle formed of an electron and hole, is a
fundamental optical excitation in condensed matter systems. Since its discovery nearly a …

For a simple Hubbard model, using a particle-particle pairing operator η and a particle-hole
pairing operator ζ, it is shown that one can write down two commuting sets of angular …

We propose that the exciton condensate may form in a well-controlled way in appropriately
arranged semiconductor quantum well structures. The mean-field theory of Keldysh and …

The theory of the electronic excitations in a highly excited semiconductor is presented. The
relaxation processes, the formation of excitons and excitonic molecules, the interaction …