Aharonov-Bohm effect on trion and biexciton in type-II semiconductor quantum dot

We theoretically examine optical Aharonov‐Bohm (AB) effects on trion and biexciton in the type‐II semiconductor quantum dots. Many‐particle states are calculated numerically by the exact diagonalization method. Two electrons in trion and biexciton are strongly correlated to each other, forming a Wigner molecule. The magnetoluminescence spectra from trion and biexciton change discontinuously as the magnetic flux increases by half of h/e, reflecting the Wigner moleculization.