Observations of indirect exciton trapping in one- and two-dimensional magnetic lattices

摘要

A simple method to create and control magnetic potentials on coupled quantum wells is demonstrated for indirect exciton magnetic confinement. Localized inhomogeneous magnetic potentials with periodically distributed local minima and maxima, known as magnetic lattices, are projected into the plane of the coupled quantum wells and used for spatially distributed two-dimensional indirect exciton trapping, in which case localized indirect excitons are observed. The indirect exciton trapping mechanism is examined by controlling the external magnetic field bias, resulting in a shift of the localized excitonic lattice.