SKYRMIONIC EXCITONS

We investigate the properties of a Skyrmionic exciton consisting of a negatively charged Skyrmion bound to a mobile valence hole. A variatio nal wave function is constructed that has the generalized total moment um P as a good quantum number. It is shown that the Skyrmionic exciton can have a larger binding energy than an ordinary magnetoexciton and should therefore dominate the photoluminescence spectrum in high-mobil ity quantum wells and heterojunctions where the electron-hole separati on exceeds a critical value. The dispersion relation for the Skyrmioni c exciton is discussed. [S0163-1829(97)52240-5].