Formation of k-space indirect magnetoexcitons in double-quantum-well direct gap heterostructures

摘要

Spectrum of excitons in double-quantum-well structures is calculated intilted magnetic field. It is shown that spectrum becomes asymmetric inquasimomentum if a transverse in respect to growth direction component ofmagnetic field is nonzero. A transition from $k$-space direct exciton groundstate to $k$-space indirect one accompanied by sharp quenching ofphotoluminescense is described.